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Peter Creed v Adrain Waller (Fri 25 May 2018)

Match won by Peter Creed. Result: 3-11,6-11,11-7,11-2,13-11.

Starting level for Peter Creed: 28,604, level confidence: 70%. Set manually.
Starting level for Adrain Waller: 34,851, level confidence: 74%. Set manually.
Adrain Waller to win as he is currently playing 22% better than Peter Creed.

Peter Creed won 60% of the games and 51% of the points.
This games result would be expected if he was better by around 10%.
This points result would be expected if he was better by around 5% (PAR scoring).
These are weighted and combined to calculate that Peter Creed played 9% better than Adrain Waller in this match.

Assuming that any level changes are shared between both players, for this result it looks like Peter Creed actually played at a level of 32,917 and Adrain Waller at a level of 30,285. Without any damping, both players would need to be adjusted by 15% 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 Peter Creed changes to +14% and Adrain Waller changes to -13%.

After applying standard match damping, the adjustment for Peter Creed becomes +3.2% and for Adrain Waller becomes -3%.

Apply match/event weighting of 100% for 'PSA Tring Open' so the adjustment is unchanged.

Increase level confidence due to one more match played. Peter Creed: 84%, Adrain Waller: 86%. Reduce level confidence based on how unexpected the result is. Peter Creed: 73%, Adrain Waller: 75%.

A final adjustment of +0% 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 Peter Creed: 29,509, level confidence: 73%.
Final level for Adrain Waller: 33,864, level confidence: 75%.