Event: Brentwood Chess Club Plate competition 2022-23

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Opponent	Rating	Result
Colin L Ellis	0	1 - 0
David D'Cruz	0	1 - 0
Michael Mason	0	1 - 0

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

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