Event: 1st Cornwall Autumn U1550 2022

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Opponent	Rating	Result
Hazel Welch	1269	1 - 0
Ben Jago	1391	½ - ½
Anthony Tatam	1512	0 - 1
Lloyd Russell	1198	0 - 1
Jonathan Ellis	1177	1 - 0

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

1309 = (6547 + 400 * (2 - 2)) / 5)