Event: Bude Spring 2021 APA

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Opponent	Rating	Result
David R Jenkins	1572	1 - 0
Lloyd Russell	1179	1 - 0
Luke Collins	0	1 - 0
Lloyd Russell	1179	0 - 1
Hugh Brown	1345	½ - ½

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

1215 = (5275 + 400 * (3 - 1)) / 5)