Event: Division 2

Opponent Rating Result
Steven J Burke 1912 ½ - ½
Tim R Poole 1783 0 - 1
Matthew J Connor 1841 0 - 1
Frank Richmond 1922 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1565 = (7458 + 400 * (0 - 3)) / 4)

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