Event: Division 3

Opponent Rating Result
Richard Buxton 1457 1 - 0
David Reeves 1467 ½ - ½
Patrick Eaton 1429 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1451 = (4353 + 400 * (1 - 1)) / 3)

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