Event: U1650 Rapid

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Opponent	Rating	Result
Ashwin GopiKrishna	1724	0 - 1
David McNish	1555	½ - ½
Mark D McWilliams	1425	1 - 0
Jay Sharman	1557	½ - ½
Mark D McWilliams	1425	1 - 0
David McNish	1555	½ - ½
Ashwin GopiKrishna	1724	0 - 1
Jay Sharman	1557	1 - 0

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

1615 = (12522 + 400 * (3 - 2)) / 8)