Event: Bude Spring 2021 APA

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

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

1765 = (4096 + 400 * (3 - 0)) / 3)