Event: Club Championship

Opponent Rating Result
Andrew Perella 1718 1 - 0
Keith D Marshall 1745 ½ - ½
Simon Matthews 1731 ½ - ½
Steve Burnell 1780 0 - 1
John S Clarke 1802 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1755 = (8776 + 400 * (1 - 1)) / 5)

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