Event: Ross Cup

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Opponent Rating Result
Ian Scott 1560 ½ - ½
Michael A Pollard 1646 0 - 1
Paul SN Kendall 1912 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1439 = (5118 + 400 * (0 - 2)) / 3)

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