Event: 3rd Chess Centre Rapid U1750

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Opponent	Rating	Result
Oliver West	1523	0 - 1
Rene Butler	1337	0 - 1
Zahra Ali	0	1 - 0
Robert Mills	1191	0 - 1
Danavir Dhunna	1101	½ - ½

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

870 = (5152 + 400 * (1 - 3)) / 5)