Event: Summer Rapidplay

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Opponent	Rating	Result
Joe McGinnis	1506	0 - 1
Charles Hind	0	1 - 0
Iain Mellis	1705	½ - ½

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

1070 = (3211 + 400 * (1 - 1)) / 3)