Event: 3rd Chess Centre Rapid U1750

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Opponent	Rating	Result
John George	1503	0 - 1
Danavir Dhunna	1101	0 - 1
Luke Haslam	1258	0 - 1
Zahra Ali	0	½ - ½
Ehsaan Ali	1080	1 - 0

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

828 = (4942 + 400 * (1 - 3)) / 5)