Event: Summer Rapid

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Opponent Rating Result
Joseph P Alcock 1579 0 - 1
Peter Hiscock 1570 0 - 1
Alan M Willett 1414 1 - 0
David E Shiers 1651 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1354 = (6214 + 400 * (1 - 3)) / 4)

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