Event: Doncaster Handicap League

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Opponent	Rating	Result
Martin McGowan	91	½ - ½
Gerald R Thickett	103	0 - 1
Alan J Smith	111	0 - 1

performance = (sum(opponents ratings) + 400(wins-losses)) / games

-165 = (305 + 400 * (0 - 2)) / 3)