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Login: | Explaining level changesDivision 1: Redland Winter Panthers v Redland Winter Jaguars (Thu 21 Nov 2024)Match played between Katie Lloyd (home) and Alisha Bhanot (away).Match won by Katie Lloyd. Result: 15-10,15-8,15-7:15-17,12-15,16-18:13-15,15-13,15-12,15-12:14-16,11-15,8-15. Starting level for Katie Lloyd: 1,711, level confidence: 73%. Set manually. Starting level for Alisha Bhanot: 1,595, level confidence: 58%. Katie Lloyd to win as she is currently playing 7% better than Alisha Bhanot. Katie Lloyd won all of the games and 64% of the points. This games result would be expected if she was better by around 55% or more. This points result would be expected if she was better by around 80% (PAR scoring). These are weighted and combined to calculate that Katie Lloyd played 80% better than Alisha Bhanot in this match. Assuming that any level changes are shared between both players, for this result it looks like Katie Lloyd actually played at a level of 2,216 and Alisha Bhanot at a level of 1,231. Without any damping, both players would need to be adjusted by 30% to match this result. Factoring in the relative levels of confidence which allows players with low confidence in their levels to change more quickly, the adjustment for Katie Lloyd changes to +23% and Alisha Bhanot changes to -28%. After applying standard match damping, the adjustment for Katie Lloyd becomes +10% and for Alisha Bhanot becomes -12%. Apply match/event weighting of 75% for 'Womens Womans Autumn 2024/2025' so the adjustment for Katie Lloyd is +7.5% and for Alisha Bhanot is -9%. Apply limits to the amount of change for a single match which are based on player level, level confidence and time since last match so that Alisha Bhanot is limited to -5% level change. In general a player's level won't go up by more than 10% or drop more than 5% if they've played in the last 7 days but those limits are relaxed if their previous match was further back. Increase level confidence due to one more match played. Katie Lloyd: 85%, Alisha Bhanot: 76%. Reduce level confidence based on how unexpected the result is. Katie Lloyd: 66%, Alisha Bhanot: 59%. A final adjustment of -0.1% 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 Katie Lloyd: 1,836, level confidence: 66%. Final level for Alisha Bhanot: 1,517, level confidence: 59%. Notes
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