Event: Mini League

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Opponent Rating Result
Guhan Visweswaran 1569 ½ - ½
John Grant 1659 0 - 1
Craig Cowley 1717 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1515 = (4945 + 400 * (0 - 1)) / 3)

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