Event: Hammersmith Sledgehammer Cup

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Opponent	Rating	Result
Andrew Kirk	0	0 - 1
Nadim Osseiran	1167	1 - 0
Nadim Osseiran	1172	½ - ½
Frank Valle	1590	1 - 0
Frank Valle	1538	1 - 0

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

1253 = (5467 + 400 * (3 - 1)) / 5)