Event: U2000 2nd Chess Centre Rapid

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Opponent	Rating	Result
Luke Gostelow	1931	0 - 1
Tim Roth	1458	1 - 0
Jago Onians	1715	½ - ½
Sean O McDonald	1981	0 - 1

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

1671 = (7085 + 400 * (1 - 2)) / 4)