Event: Derby Chess Club Championship

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Opponent	Rating	Result
Christian Smith	0	½ - ½
Andre Cockburn	0	½ - ½
Joseph Pearce	0	½ - ½
Jacob Godwin	0	1 - 0
Chris Sharp	0	1 - 0

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

160 = (0 + 400 * (2 - 0)) / 5)