Event: League Championship

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Opponent Rating Result
Alan Giles 153 0 - 1
David W Shaw 162 1 - 0
John D Lyth 181 ½ - ½
Yasmin Giles 183 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

270 = (679 + 400 * (2 - 1)) / 4)

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