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Login: | Explaining level changesDivision 2: University of Bath 3 v Gordano - Gordano (Wed 11 Oct 2023)Match played between Luke Beedie (home) and Steve Gale (away).Match won by Steve Gale. Result: 8-15,15-10,15-13,11-15,8-15. Starting level for Luke Beedie: 994, level confidence: 36%. Starting level for Steve Gale: 1,944, level confidence: 81%. Set manually. Steve Gale to win as he is currently playing 96% better than Luke Beedie. Steve Gale won 60% of the games and 54% of the points. This games result would be expected if he was better by around 10%. This points result would be expected if he was better by around 19% (PAR scoring). These are weighted and combined to calculate that Steve Gale played 12% better than Luke Beedie in this match. Due to the difference between the players' levels, allow for the likelihood that Steve Gale was taking it easy by anything up to 12%. This gives him an allowed level range for this match between 1,473 and 1,944 without affecting his level. As Steve Gale has played below his allowed range at 1,282, his level reduction is 15% before damping. On the assumption that Steve Gale would normally have been playing at level 1,718 (based on typical behaviour), Luke Beedie played better than expected and therefore gains a pre-damping level increase of 24%. Allowing for the difference in level between the players, the adjustments have been reduced to 10.2% and 17% respectively. Factoring in the relative levels of confidence which allows players with low confidence in their levels to change more quickly, the adjustment for Steve Gale changes to -4.3% and Luke Beedie changes to +17%. After applying standard match damping, the adjustment for Steve Gale becomes -2.9% and for Luke Beedie becomes +9.6%. Apply match/event weighting of 75% for 'Mixed Autumn 2023/2024' so the adjustment for Steve Gale is -2.1% and for Luke Beedie is +7.2%. Increase level confidence due to one more match played. Steve Gale: 90%, Luke Beedie: 60%. Reduce level confidence based on how unexpected the result is. Steve Gale: 68%, Luke Beedie: 46%. A final adjustment of +12.8% has been made to both players as part of the automatic calibration that is performed after each match. All players in this pool will have been adjusted equally in order to remain equivalent to other player pools. Final level for Luke Beedie: 1,341, level confidence: 46%. Final level for Steve Gale: 1,925, level confidence: 68%. Notes
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