Event: Steele Cup

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Opponent Rating Result
Graeme Boxall 93 1 - 0
Michael Davies 75 0 - 1
Ray Rennells 80 0 - 1
John Heath 75 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

81 = (323 + 400 * (2 - 2)) / 4)

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