Event: Lewisham Club Championship 2023

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Opponent	Rating	Result
Tim Gluckman	0	0 - 1
David Hamilton	1510	1 - 0
Mike H Wood	1706	0 - 1

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

939 = (3216 + 400 * (1 - 2)) / 3)