Event: Doncaster Handicap League

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Opponent Rating Result
Martin S Simmonds 135 0 - 1
Sean O McDonald 154 0 - 1
Steven R Brooks 115 0 - 1
Alan J Smith 128 1 - 0
Gerald R Thickett 109 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-32 = (641 + 400 * (1 - 3)) / 5)

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Opponent Rating Result
Gerald R Thickett 109 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

109 = (109 + 400 * (0 - 0)) / 1)