Event: Club Championship

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Opponent Rating Result
Reece Randall 0 1 - 0
David E Aspinall 1719 ½ - ½
Peter A Wilson 1758 0 - 1
Colin Wilks 1494 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1243 = (4971 + 400 * (1 - 1)) / 4)

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