Event: Division 2

Opponent Rating Result
Oliver Graham 1842 0 - 1
Matthew J Connor 1841 ½ - ½
Steven J Burke 1912 ½ - ½
Maurice J Hill 1733 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1832 = (7328 + 400 * (1 - 1)) / 4)

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