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ANALYSING FIELDING IMPACT IN THE BIG BASH LEAGUE

At CricViz we record and rank every fielding moment of note by prescribing a run value and a difficulty to each incident. A full explanation of our methodology for our fielding rankings is included in our PlayViz definition.

Collecting this data allows us to rank every team and every player by adding together all of the separate fielding incidents. At the end of the regular Big Bash League season we’ve had a look at how the leaderboards for players and teams stack up.

Team Leaderboard

The team fielding impact leaderboard is very similar to the final league standings, indicating the importance of fielding to winning matches. Indeed, 23 of the 32 matches in the regular league were won by the team who scored a higher fielding impact rating in that match.

Interestingly Perth Scorchers’ dropped catches does not correlate with their fielding impact as clearly as the other seven teams. This is largely because they dropped four ‘easy’ chances ranked as likely to have been taken at least 70% of the time—harming their impact—while also dropping four ‘hard’ chances ranked as likely to have been taken less than 30% of the time—adding to the dropped catches count.

Fielding RankingTeamFielding ImpactDropped CatchesLeague Position
1Perth Scorchers+25.4091
2Brisbane Heat+20.0952
3Sydney Sixers+17.4563
4Melbourne Renegades+6.0545
5Melbourne Stars-13.8044
6Hobart Hurricanes-23.45107
7Sydney Thunder-31.15128
8Adelaide Strikers-31.5096

Player Leaderboard

To an extent the individual rankings are limited by sample size with no one player having played more than eight matches and each player having only a dozen fielding incidents at most. To facilitate for this, the individual rankings only include those players to have been involved in at least three fielding incidents. While this is still a small number it gives some indication of quality.

Seven of the top ten players did not record a single negative impact. Kurtis Patterson is the only top ten fielder who is not listed thanks largely to a single significant fielding moment (Chris Jordan, Ashton Agar, David Hussey, Clive Rose, Liam O’Connor and Ashton Turner all took a catch of at least +5 impact; George Bailey, Alex Ross and Marcus Harris all made a run out with a direct hit of at least +5 impact).

PlayerTeamFielding Impact
Chris JordanAdelaide Strikers+14.30
Ashton AgarPerth Scorchers+13.65
David HusseyMelbourne Stars+11.65
Alex RossBrisbane Heat+11.20
Clive RoseHobart Hurricanes+10.90
Liam O'ConnorAdelaide Strikers+10.30
Kurtis PattersonSydney Thunder+9.35
George BaileyHobart Hurricanes+8.90
Marcus HarrisMelbourne Renegades+8.35
Ashton TurnerPerth Scorchers+8.00

 

Lowest Ranked Fielders

Perhaps unsurprisingly three wicket-keepers, who are involved in the most incidents, populate the lowest ten ranked fielders, and perhaps less surprisingly still, Ben Dunk, Adelaide Strikers’ part-time keeper who was replaced behind the stumps by Tim Ludeman half way through the season, has the lowest ranking of the lot.

Some of the lowest ranked players are largely there due to one or two basic errors (Kieron Pollard, Luke Wright, Ian Bell) which are punished significantly because they should, and most of the time would, have been taken. Others are there due to a handful or errors (Ben Dunk, Peter Nevill and Travis Head) or at times a litany of errors (Andrew Tye, Ben Laughlin, Cameron Boyce and Brad Haddin). Despite having taken an excellent catch in Match 27, Laughlin makes the lowest ranked list having been involved in five negative incidents.

PlayerTeamFielding Impact
Ben DunkAdelaide Strikers-20.10
Andrew TyePerth Scorchers-16.80
Ben LaughlinAdelaide Strikers-15.30
Kieron PollardAdelaide Strikers-14.25
Luke WrightMelbourne Stars-14.10
Cameron BoyceHobart Hurricanes-13.75
Ian BellPerth Scorchers-13.25
Brad HaddinSydney Sixers-13.10
Peter NevillMelbourne Renegades-11.75
Travis HeadAdelaide Strikers-11.60

Freddie Wilde is an Editor and Analyst at CricViz. @fwildecricket. 

THE ANATOMY OF A THRILLER

Freddie Wilde analyses the key moments in the first ODI of the five match series between England and Sri Lanka that ended in a tie.  

Read more

4TH ASHES TEST ANALYSIS

On the first morning of the Trent Bridge Test match, Australia batted first and at the first drinks break were 38 for 7, their top seven all back in the pavilion. England started batting 50 minutes later and an hour into their innings were 30 for 0. The Ashes were, barring a freak turnaround, already on their way back to England.

What happened? Why did Australia collapse so dramatically? Great bowling? Poor batting? A green-topped, bowlers’ dream that simply handed the match to the captain lucky enough to win the toss?

Why was the first hour of England’s innings so different to that of Australia’s an hour and a half earlier?

Did the conditions get easier?

A little. The ball kept swinging; the average deviation in the air when the Australians bowled was 2.1 degrees, slightly more than the 1.9 degrees when England bowled. Both teams swung roughly 60% of the balls they bowled by more than 1.5 degrees, the amount of swing that starts to have a significant impact on a batsman’s performance.

There was more seam movement when Australia batted. 31% of the balls in the first hour deviated by more than one degree off the pitch, whereas the figure when England batted was 18%. The average seam movement faced was 0.7 degrees for Australia and 0.5 degrees for England.

However, this was part of a pattern in the series. England’s seamers got more lateral movement off the wicket and were more accurate throughout; the Australian pacemen consistently bowled a little quicker on average and got more movement in the air.

Conditions had got a little easier by the time England batted, but not drastically so.

Did England out-bowl Australia?

England, and Stuart Broad in particular, bowled very well. A traditional good length in Test cricket is usually defined as balls pitching six to eight metres from the stumps. These are the balls that have the lowest average (runs per wicket), regardless of pitch, conditions and opposition. When the ball is moving around in the air and off the wicket, the metre or so fuller than that (5-6m from the stumps) becomes equally, if not even more, dangerous. England landed just over 60% of their deliveries in these areas, and these balls accounted for all but one of the wickets in that innings. Australia though, bowled even more balls on these lengths, 67% in their first 11 overs.

The England bowlers also bowled unusually straight. Their average line was middle and off, very straight for Test cricket; 49% of the balls they bowled were within the line of leg stump and six inches outside off stump. It was the balls on these lines that did the bulk of the damage to the Australian top order.

Australia bowled significantly wider. Their average line was six inches outside off stump – they put 52% of their deliveries wide of this mark, compared to 35% of England’s. This allowed England’s batsmen more easy leaves than the Australians got, nearly half as many again.

So, as was the case all summer, better areas and more movement off the pitch from England, albeit at a slightly slower pace. When the pitch offered assistance, England were the more dangerous attack. When it didn’t, Australia’s pace and swing posed the greater threat. Trent Bridge was no minefield, but nor was it the pitch where you wanted your great strength to be taking the pitch out of the equation.

Did Australia go too hard at the ball? Play too many shots? Not leave well enough?

Using the BatViz system we can compare how Australia played the deliveries they faced with how an average Test side would have played them.

Given the balls they faced, we would have expected 25 attacking shots in the first hour. Australia played 22. BatViz projected 14.5 balls to be left; they played no shot on 19 occasions.

For comparison, we would have expected England to play 24.5 attacking shots and they played 21. They got more balls to leave, as Australia bowled wider than England. 17.5 leaves were forecast – they actually left the ball 25 times.

First hour BatViz shot analysis   
AustraliaEngland
Attacking shotsExpected2524.5
Actual2221
LeavesExpected14.517.5
Actual1925

There therefore seems to have been little difference in the overall intent of the two sides and it is worth noting that only three of the seven Australian wickets fell to attacking shots. That might be three too many given the situation and conditions, but it is easy to criticise attacking shots when they don’t come off and applaud them when they do: England showed a very similar level of attacking intent and left the ball marginally better.

Was it therefore poor shot selection and execution?

Given the balls received, BatViz projected 11.9 false shots – edges and misses – from the Australians. There were 19. For comparison, we would have expected eight false shots from England and there were just six (five misses and one edge). On average in 11 overs of Test cricket there would be 4.5 false shots.

England had to play fewer balls and the balls they played at moved a little less. They also played them better than par, whereas the Australians underperformed against the balls they faced.

First hour BatViz false shot analysis  
AustraliaEngland
False shots - predicted11.98
False shots - actual196
Missed105
Edged91
Wickets from edge60

Even so, 19 false shots to six can’t be the difference between seven down and no wickets very often.

So were Australia just unlucky?

They certainly were to an extent. Of their 19 false shots, nine were edges (47%). Generally only about 37% of false shots are edges, so they were unlucky to nick almost as many as they missed. England played and missed five times for their solitary edge.

About 15% of edges result in a wicket. Australia’s nine edges produced six wickets, so the picture of a perfect storm is forming. The pitch had good carry, so there was little chance of edges with the new ball falling short of the slip cordon. The England bowlers’ areas were good, so the edges produced were more likely to find catchers than fly to safety. Two wickets in the first over meant that for the remainder of the innings Alastair Cook employed five or six catchers, so any edge was likely to find a catcher rather than a gap.

And what about the catching?

The first hour brought five slip catches, the innings as a whole comprised eight. Every single one of the chances offered were held, including Ben Stokes’ stunning one-handed grab.

On average in Test cricket roughly 70% of slip catches are caught. PlayViz goes deeper by rating chances according to where they come and the reaction time the fielder has. In doing so we can estimate that the five chances presented in the first hour would normally have resulted in two or three wickets (2.65 to be exact): the English cordon hugely over-performed.

A bit of everything?

The Australians were hit by a perfect storm of several factors, each multiplying the effect of the others that together created a manic 11 overs that devastated their Ashes dreams.

The ball swung and seamed enough to trouble the batsmen. The bowlers – Broad in particular – used the conditions very skilfully, and allowed the batsmen little respite. The Aussies didn’t cope with the moving ball particularly well and didn’t have a lot of luck when it came to playing and missing. A pitch with good pace and bounce ensured the edges carried and early wickets meant a packed slip cordon. The chances went to hand and the fielders caught exceptionally well. 38 for 7. Ashes gone.

2ND ASHES TEST ANALYSIS

England maintained their pattern of following a win with a defeat due to a below par performance in all three disciplines at Lord’s. After winning the first Test with positive PlayViz scores in batting, bowling and fielding, they slumped well below what was expected at headquarters.

In being dismissed for 312 and 103 on a flat wicket, the hosts recorded a batting score of -267 in PlayViz – they scored 267 runs below what an average Test team was projected to score in those conditions and against that bowling attack.

Australia’s seam unit was as expected quicker than their counterparts, averaging more than 3mph faster, but crucially their accuracy and movement in their air was also superior. England seamed the ball more, but the tourists attacked the stumps with greater frequency (13% in line with stumps, England 11%) and found a way to swing the ball more as the Test developed.

10% of England’s pace deliveries swung more than 1.5 degrees in Australia’s second innings, compared with 29% of Australia’s as they stormed to victory. This was a higher proportion than they recorded in England’s first innings (26%).

England’s lack of incisiveness – the tourists declared twice – contributed to a bowling score of -135, vastly inferior to Australia’s 452. Mitchell Johnson led an attack that showed its suitability to the Lord’s conditions, assisted by a fielding effort that out-performed England; Australia dropped five chances, England eight.

ENGLAND V NEW ZEALAND 1ST TEST ANALYSIS

The first Test of the 2015 English summer was a rollercoaster affair that showed the format in its best possible light. Both teams held dominant positions in a high quality contest that gave the CricViz tools full opportunity to show their uses.

England started the Test with a win probability of 53% in WinViz, which they lifted to 60% at stumps on day one. At drinks on day three this had fallen to 6% as New Zealand made early inroads after piling up a first innings total of 523; England needed something special, and they got it from Ben Stokes.

The Durham left-hander smashed the fastest Lord’s century, a game-changing innings that showed how individual brilliance can turn WinViz on its head. When Stokes arrived at the crease England had a win probability of 17% – when he was dismissed 109 minutes later for 101, it was New Zealand’s win probability that stood at 17%.

Stokes’ knock was the ultimate counter-attacking innings. He thrived under the pressure of England’s perilous position, playing with his trademark aggression despite the quality of the Black Caps bowling attack and the fact he did not score from his first nine deliveries.

An interesting feature of his innings was that New Zealand bowled better to him as the belligerent knock developed. Rather than wilting in the face of the barrage, the wicket-taking threat actually increased: Stokes first 46 deliveries had an average of 1.18% chance of taking his wicket, his second 46 a 1.88% chance.

The BatViz calculation that measures projected average runs and wickets from each delivery produces a more expected pattern in Alastair Cook’s anchoring innings of 162. The first half of his stay at the crease had an average 1.82% chance of taking his wicket, the second half a 1.60% chance.

Stokes solidified his position as England’s talisman in this Test, producing two innings of huge importance that were notable not just for their impact but for their quality. He showed his team-mates that an aggressive mode of batting could thrive against good attacks in tricky conditions.

ENGLAND CATCHING ON

When the England squad headed to Spain for a pre-series training camp it was derided as a holiday by the Australians. Some form of team bonding was required by a team that had only just been introduced to new coach Trevor Bayliss, but it became clear that their Almeria trip was far more than a jaunt in the sun.

In his post-match interviews at Trent Bridge Alastair Cook placed heavy emphasis on the fielding preparation done in Spain. The slip cordon became settled and hard work was done, with the captain keen to point out how much catching practice was conducted.

The rewards are clear – England have saved more runs through their fielding than Australia. CricViz measures the fielding actions of both teams in each game, producing a run value that their fielding has had on the opposition’s score. The use of projected averages and a detailed rating system allows the accurate measurement of fielding impact.

Australia recorded negative fielding scores in each of the first four Tests, combining to produce a total of -124. England saved runs in three of these four Tests, heading to The Oval with a fielding score of +67.

Fielding impact (runs)EnglandAustralia
Cardiff84-26
Lord's-133-58
Edgbaston41-2
Trent Bridge75-38
Total67-124

The worst fielding score of the series so far was England’s -133 at Lord’s, part of a performance where nearly everything went wrong. England showed they could bounce back better from a nightmare performance than Australia, and this was especially true in their fielding.

They dropped just one chance at Edgbaston – a difficult opportunity that flew high through the slips – and were flawless in the first innings at Trent Bridge. Not only was every catch opportunity taken, but no ground fielding errors were recorded in Australia’s 111-ball procession.

With the urn within reach chances were spilled in the second innings, but the work done in Spain was evident. Ben Stokes and Joe Root pulled off memorable diving efforts and whilst Steven Smith did something similar for the tourists, it was an act of defiance that did not represent the team’s fielding standards.

1ST ASHES TEST ANALYSIS

FIELDING COMPARISON

With two well-matched sides, each batting and bowling well, to a large degree the deciding factor in the series opener was the quality of their fielding in the first innings. In a game where both sides got a number of half-chances, England were sharp and clung onto theirs, Australia spilt a few and suffered as a result.   The difference between the impact of the two sides’ fielding in the first innings was 113 runs, almost the entire 1st innings lead that gave England control of the match.

Eng Fielding ScoresAus Fielding Scores
1st Innings51-62
2nd Innings3336

At the end of Australia’s first innings WinViz had England at nearly 70% to win the match.

Take away the 113 runs between the teams’ fielding and the situation would have been different. England would still have had a small edge – Australia still had to bat last on a wearing wicket – but it would have been far more evenly poised contest.

1st-Test-CricViz-Analysis-WinViz-2

AUSTRALIA’S AGGRESSION AGAINST SPIN

Australia pursued a policy of aggression against the English spinners, but in doing so lost 7 wickets for 158, including 4 key top order wickets to Moeen Ali. Australia’s record against spin overseas has been poor in recent years, and Ali was the bowler against whom they underperformed most in this match.

Test Avg Overseas – since 2010
SpinPace
Aus30.732.3
Eng35.230.8

From the Hawkeye data, BatViz predicts that an average Test batsman would have attacked 39% of the balls bowled by English spinners in Cardiff. The Australians attacked almost exactly half. On this occasion, the strategy hurt them considerably.   With long periods when there was little assistance for the spinners from the pitch, BatViz estimates that an average Test side should have averaged 45 against spin in this match, but instead Australia lost their wickets at 22.6.

Australians v Spin in Cardiff
BatViz PredictionActual
Batting Avg45.122.6
Attacking %39%50%

DIFFERENT APPROACHES FROM THE TWO SETS OF BOWLERS

CricViz’s analysis of the two pace attacks shows that while both sides bowled well in Cardiff, they did so in slightly different ways. Australia bowled slightly quicker, and swung the ball more in the air.

England in contrast, were able to get more movement off the wicket (often through the use of cutters) and were far more accurate. Australia were able to induce slightly more mistakes from the batsman, England did so in more dangerous areas.

FLUCTUATIONS IN THE CONDITIONS

With little pace or life in the surface, the pitch became more of a new ball wicket as the match went on.

BatViz Predicted Average by phase of innings
BallsInn 1Inn 2Inn 3Inn 4
5027.522.233.521.7
10027.632.326.734.3
15024.338.639.135.3
20031.545.641.735.0
25033.337.136.040.7
30032.439.734.149.5
35035.649.436.936.8
40037.633.231.838.5
48031.841.825.3
53028.623.5

On the first day, under cloudy skies, the ball swung for most of the day, and batting although slightly easier after the first two hours, remained difficult all day. As you can see from the graph, England’s new ball spells were more potent, but as the ball stopped swinging they were unable to sustain the threat to the batsman that Australia had in more helpful conditions on Day 1.

PLAYVIZ

This was a high quality encounter. An excellent Australian side buoyed by recent successes, and a good, young England side playing in their home conditions. As we can see from the PlayViz output, the general standard of play was very high.

1st-Test-CricViz-Analysis-PlayViz-1

Over the course of the match, England’s batting was 79 runs better than an average Test side’s under the same conditions, their bowling 81 runs better and the quality of their fielding was worth another 84 runs.

Australia’s bowlers were outstanding, 150 runs better than a typical attack, but they were let down by their fielding, particularly in the first innings. The Australian batting, whilst 17 runs better than a par Test side, was also down on their usual performance levels.