Event: Doncaster Handicap League

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Opponent Rating Result
Gordon Harrison 105 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

105 = (105 + 400 * (0 - 0)) / 1)

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Opponent Rating Result
Alan Taylor 101 1 - 0
John E Beech 123 0 - 1
Ian Farrow 104 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

243 = (328 + 400 * (2 - 1)) / 3)