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Login: | Explaining level changesPremier C: Bradley Stoke Squash Club A v University of Bristol Ballers (Thu 31 Oct 2024)Match played between Andrew Blake (home) and Freddy 'The Oil Tanker' Fisher (away).Match won by Andrew Blake. Result: 11-3,11-6,11-4. Starting level for Andrew Blake: 1,561, level confidence: 86%. Set manually. Starting level for Freddy 'The Oil Tanker' Fisher: 1,461, level confidence: 78%. Set manually. Andrew Blake to win as he is currently playing 7% better than Freddy 'The Oil Tanker' Fisher. Andrew Blake won all of the games and 72% 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 154% (PAR scoring). These are weighted and combined to calculate that Andrew Blake played 154% better than Freddy 'The Oil Tanker' Fisher in this match. Assuming that any level changes are shared between both players, for this result it looks like Andrew Blake actually played at a level of 2,406 and Freddy 'The Oil Tanker' Fisher at a level of 948. Without any damping, both players would need to be adjusted by 54% 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 Andrew Blake changes to +47% and Freddy 'The Oil Tanker' Fisher changes to -52%. After applying standard match damping, the adjustment for Andrew Blake becomes +19% and for Freddy 'The Oil Tanker' Fisher becomes -21%. Apply match/event weighting of 75% for 'Mixed Autumn 2024/2025' so the adjustment for Andrew Blake is +14% and for Freddy 'The Oil Tanker' Fisher is -15%. 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 Andrew Blake is limited to +10% and Freddy 'The Oil Tanker' Fisher 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. Andrew Blake: 93%, Freddy 'The Oil Tanker' Fisher: 88%. Reduce level confidence based on how unexpected the result is. Andrew Blake: 60%, Freddy 'The Oil Tanker' Fisher: 57%. A final adjustment of -0.7% 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 Andrew Blake: 1,715, level confidence: 60%. Final level for Freddy 'The Oil Tanker' Fisher: 1,372, level confidence: 57%. Notes
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