PlayViz breaks down each team’s performance into its three basic aspects – batting, bowling and fielding. Each of those areas is given a positive or negative score in runs, measuring the performance of that team against that of an average Test team in the conditions present at that time.
Batting & bowling
Team performances are compared to those of an average Test team, with adjustments taken into account for the pitch and opposition strength. The comprehensive historical database predicts the average performance of batsmen and bowlers in the position and role they are playing in. The PlayViz function measures performance relative to averages that take into account extra variables.
Each team’s fielding performance is measured on the direct impact it has had on the score. Runs saved and missed are totalled for each player, with a dropped catch measured at the value of the wicket that was missed according to the model of projected scores. Fielding scores are adjusted by a system that rates the difficulty of a piece of fielding.