Event: Summer League Division 3

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Opponent Rating Result
Mick McManus 118 0 - 1
Mick O'Hanlon 0 0 - 1
Andrew M Turnidge 0 0 - 1
John HT Eddershaw 95 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-247 = (213 + 400 * (0 - 3)) / 4)

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