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Login: | Explaining level changesDivision 3: Redland Summer F (Ladies) v Kingsdown Stallions (Thu 13 Jun 2024)Match played between Alisha Bhanot (home) and Ed 'Fury' Ames (away).Match won by Alisha Bhanot. Result: 15-8,15-5,15-10. Starting level for Alisha Bhanot: 1,718, level confidence: 69%. Starting level for Ed 'Fury' Ames: 1,534, level confidence: 77%. Set manually. Alisha Bhanot to win as she is currently playing 12% better than Ed 'Fury' Ames. Alisha Bhanot won all of the games and 66% 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 96% (PAR scoring). These are weighted and combined to calculate that Alisha Bhanot played 96% better than Ed 'Fury' Ames in this match. Assuming that any level changes are shared between both players, for this result it looks like Alisha Bhanot actually played at a level of 2,271 and Ed 'Fury' Ames at a level of 1,161. Without any damping, both players would need to be adjusted by 32% 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 Alisha Bhanot changes to +30% and Ed 'Fury' Ames changes to -26%. After applying standard match damping, the adjustment for Alisha Bhanot becomes +12.6% and for Ed 'Fury' Ames becomes -12%. Apply match/event weighting of 65% for 'Mixed Summer 2023/2024' so the adjustment for Alisha Bhanot is +8.2% and for Ed 'Fury' Ames is -7.4%. 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 Ed 'Fury' Ames 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. Alisha Bhanot: 83%, Ed 'Fury' Ames: 88%. Reduce level confidence based on how unexpected the result is. Alisha Bhanot: 63%, Ed 'Fury' Ames: 66%. 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 Alisha Bhanot: 1,856, level confidence: 63%. Final level for Ed 'Fury' Ames: 1,459, level confidence: 66%. Notes
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