Event: Camborne QP1 2022-23

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Opponent	Rating	Result
Ian M George	1938	0 - 1
John James	0	1 - 0
Hugh Brown	1383	1 - 0

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

1240 = (3321 + 400 * (2 - 1)) / 3)