Event: Camborne QP1 2022-23

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Opponent	Rating	Result
Bryan Jones	1480	0 - 1
Martin Pope	1720	1 - 0
Hugh Brown	1383	½ - ½
John James	0	0 - 1

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

1046 = (4583 + 400 * (1 - 2)) / 4)