Event: Summer League Division 2

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Opponent Rating Result
Mick McManus 1614 0 - 1
Pat Connolly 1636 1 - 0
Ian Barker 1567 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1606 = (4817 + 400 * (1 - 1)) / 3)

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