Event: Doncaster Handicap League

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Opponent Rating Result
Alan J Smith 128 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

528 = (128 + 400 * (1 - 0)) / 1)

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Opponent Rating Result
Tim Prosser 136 0 - 1
John E Beech 126 0 - 1
Martin McGowan 91 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-282 = (353 + 400 * (0 - 3)) / 3)