Event: League Division One

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Opponent Rating Result
John Hall 180 1 - 0
Chris Wright 171 ½ - ½
Peter R Harrington 172 ½ - ½
Callum Welsh 158 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

270 = (681 + 400 * (1 - 0)) / 4)

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