Event: OTB Club Championship

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Opponent	Rating	Result
John Cawdery	2089	0 - 1
James Walsh	1375	½ - ½
Ashwin GopiKrishna	1021	0 - 1
Joseph Rosenberg	1516	½ - ½
Paul Read	1281	1 - 0
Davi Diniz Afonso	1746	0 - 1
Nic Charles	1294	1 - 0

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

1417 = (10322 + 400 * (2 - 3)) / 7)