Event: Doncaster Handicap League

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Opponent Rating Result
Gerald R Thickett 106 ½ - ½
Gerald R Thickett 109 1 - 0
Steven R Brooks 115 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

110 = (330 + 400 * (1 - 1)) / 3)

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