Menu | Explaining level changesMark Turner v Michael Broadbent (Wed 30 Apr 2025)Match won by Michael Broadbent. Result: 18-16,6-15,11-15,11-15.Starting level for Mark Turner: 1,206, level confidence: 59%. Starting level for Michael Broadbent: 880, level confidence: 72%. Set manually. Mark Turner to win as he is currently playing 37% better than Michael Broadbent. Michael Broadbent won 75% of the games and 57% of the points. This games result would be expected if he was better by around 25%. This points result would be expected if he was better by around 33% (PAR scoring). These are weighted and combined to calculate that Michael Broadbent played 28% better than Mark Turner in this match. An upset! Assuming that any level changes are shared between both players, for this result it looks like Michael Broadbent actually played at a level of 1,163 and Mark Turner at a level of 912. Without any damping, both players would need to be adjusted by 32% to match this result. Allowing for the difference in level between the players, the adjustments have been reduced to 27% and 27% respectively. Factoring in the relative levels of confidence which allows players with low confidence in their levels to change more quickly, the adjustment for Michael Broadbent changes to +22% and Mark Turner changes to -27%. After applying standard match damping, the adjustment for Michael Broadbent becomes +12% and for Mark Turner becomes -13%. Apply match/event weighting of 50% for 'Ickleford Boxes' so the adjustment for Michael Broadbent is +6% and for Mark Turner is -6.1%. 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 Mark Turner 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. Michael Broadbent: 85%, Mark Turner: 77%. Reduce level confidence based on how unexpected the result is. Michael Broadbent: 64%, Mark Turner: 58%. A final adjustment of +0.8% 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 Mark Turner: 1,169, level confidence: 58%. Final level for Michael Broadbent: 931, level confidence: 64%. Notes
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