Event: Club Championship

Opponent Rating Result
Richard Oxnard 1538 ½ - ½
J Dave H Hair 1728 ½ - ½
Joe Murray 1487 1 - 0
Simon Matthews 1740 ½ - ½
Paul Richardson 1505 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1680 = (7998 + 400 * (1 - 0)) / 5)

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