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Login: | Explaining level changesNick 'Or Tin' Benson v Nick Jones (Tue 14 Mar 2023)Match won by Nick 'Or Tin' Benson. Result: 12-15,15-8,15-5,15-7.Starting level for Nick 'Or Tin' Benson: 4,655, level confidence: 69%. Starting level for Nick Jones: 2,271, level confidence: 73%. Set manually. Nick 'Or Tin' Benson to win as he is currently playing 105% better than Nick Jones. Nick 'Or Tin' Benson won 75% of the games and 62% 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 63% (PAR scoring). These are weighted and combined to calculate that Nick 'Or Tin' Benson played 37% better than Nick Jones in this match. Due to the difference between the players' levels, allow for the likelihood that Nick 'Or Tin' Benson was taking it easy by anything up to 13%. This gives him an allowed level range for this match between 3,282 and 4,655 without affecting his level. As Nick 'Or Tin' Benson has played below his allowed range at 3,201, his level reduction is 2.5% before damping. On the assumption that Nick 'Or Tin' Benson would normally have been playing at level 4,048 (based on typical behaviour), Nick Jones played better than expected and therefore gains a pre-damping level increase of 14%. Allowing for the difference in level between the players, including some additional protection for the better player, the adjustments have been reduced to 1.5% and 9.5% respectively. Factoring in the relative levels of confidence which allows players with low confidence in their levels to change more quickly, the adjustment for Nick 'Or Tin' Benson changes to -1.5% and Nick Jones changes to +9%. After applying standard match damping, the adjustment for Nick 'Or Tin' Benson becomes -0.9% and for Nick Jones becomes +4.4%. Given Nick 'Or Tin' Benson's level and the type of match played, an additional damping of 45% has been applied to his level change. Given Nick Jones's level and the type of match played, an additional damping of 5.3% has been applied to his level change. Apply match/event weighting of 50% for 'Redland Green Boxes' so the adjustment for Nick 'Or Tin' Benson is -0.3% and for Nick Jones is +2.1%. Increase level confidence due to one more match played. Nick 'Or Tin' Benson: 83%, Nick Jones: 86%. Reduce level confidence based on how unexpected the result is. Nick 'Or Tin' Benson: 68%, Nick Jones: 70%. A final adjustment of -1.1% 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 Nick 'Or Tin' Benson: 4,543, level confidence: 68%. Final level for Nick Jones: 2,315, level confidence: 70%. Notes
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