Event: TCL Division 4

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Opponent Rating Result
Alan F Webster 84 1 - 0
Andy Proudfoot 106 1 - 0
Geoffrey Wilson 107 1 - 0
Ken Ashby 97 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

399 = (394 + 400 * (3 - 0)) / 4)

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