Event: Bath Summer Tournament 2022

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Opponent	Rating	Result
Jason Daye	1433	½ - ½
Robbie Hirst	1810	½ - ½
Roy Whaley	1270	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1638 = (4513 + 400 * (1 - 0)) / 3)