Event: Doncaster League

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Opponent Rating Result
Paul Hagan 1364 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1764 = (1364 + 400 * (1 - 0)) / 1)

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Opponent Rating Result
Patrick McGrath 0 ½ - ½
David P Hatfield 1601 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

801 = (1601 + 400 * (0 - 0)) / 2)