Menu | Explaining level changesJulian Benson v Keith Brice (Sun 13 Apr 2025)Match won by Julian Benson. Result: 11-5,11-4,11-3.Starting level for Julian Benson: 1,148, level confidence: 63%. Starting level for Keith Brice: 856, level confidence: 80%. Set manually. Julian Benson to win as he is currently playing 34% better than Keith Brice. Julian Benson won all of the games and 73% of the points. This games result would be expected if he was better by around 55% or more. This points result would be expected if he was better by around 175% (PAR scoring). These are weighted and combined to calculate that Julian Benson played 175% better than Keith Brice in this match. Assuming that any level changes are shared between both players, for this result it looks like Julian Benson actually played at a level of 1,644 and Keith Brice at a level of 598. Without any damping, both players would need to be adjusted by 43% to match this result. Allowing for the difference in level between the players, the adjustments have been reduced to 36% and 36% respectively. Factoring in the relative levels of confidence which allows players with low confidence in their levels to change more quickly, the adjustment for Julian Benson changes to +36% and Keith Brice changes to -27%. After applying standard match damping, the adjustment for Julian Benson becomes +17.2% and for Keith Brice becomes -14%. Apply match/event weighting of 50% for 'Redland Boxes' so the adjustment for Julian Benson is +8.6% and for Keith Brice is -6.7%. 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 Keith Brice 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. Julian Benson: 80%, Keith Brice: 89%. Reduce level confidence based on how unexpected the result is. Julian Benson: 56%, Keith Brice: 62%. 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 Julian Benson: 1,245, level confidence: 56%. Final level for Keith Brice: 814, level confidence: 62%. Notes
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