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Ivan Yuen v Leung Chi Hin Henry (Tue 15 Oct 2019)

Match won by Ivan Yuen. Result: 11-7,11-8,12-10.

Starting level for Ivan Yuen: 34,047, level confidence: 71%. Set manually.
Starting level for Leung Chi Hin Henry: 26,142, level confidence: 70%. Set manually.
Ivan Yuen to win as he is currently playing 30% better than Leung Chi Hin Henry.

Ivan Yuen won all of the games and 58% 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 36% (PAR scoring).
These are weighted and combined to calculate that Ivan Yuen played 42% better than Leung Chi Hin Henry in this match.

Assuming that any level changes are shared between both players, for this result it looks like Ivan Yuen actually played at a level of 35,585 and Leung Chi Hin Henry at a level of 25,012. Without any damping, both players would need to be adjusted by 4.5% to match this result.

Allowing for the difference in level between the players, the adjustments have been reduced to 3.9% and 3.9% respectively.

Factoring in the relative levels of confidence which allows players with low confidence in their levels to change more quickly, the adjustment for Ivan Yuen changes to +3.9% and Leung Chi Hin Henry changes to -3.9%.

After applying standard match damping, the adjustment for Ivan Yuen becomes +1.4% and for Leung Chi Hin Henry becomes -1.4%.

Apply match/event weighting of 100% for 'PSA Srfi Indian Tour' so the adjustment is unchanged.

Increase level confidence due to one more match played. Ivan Yuen: 84%, Leung Chi Hin Henry: 84%. Reduce level confidence based on how unexpected the result is. Ivan Yuen: 81%, Leung Chi Hin Henry: 80%.

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 Ivan Yuen: 34,322, level confidence: 81%.
Final level for Leung Chi Hin Henry: 25,961, level confidence: 80%.