Event: Silver Rook

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Opponent	Rating	Result
Joseph Hartley	0	1 - 0
Bertie Leatham	1019	1 - 0
Stephen Cybaniak	1326	½ - ½

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

1048 = (2345 + 400 * (2 - 0)) / 3)