Event: Silver Rook

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Opponent Rating Result
Ben Deith 1797 ½ - ½
David Summerland 1481 0 - 1
Michael A Fox 1611 0 - 1
Harley Townsend 1349 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1260 = (6238 + 400 * (0 - 3)) / 4)

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