Event: Watkinsons League

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Opponent Rating Result
Karim Khan 1750 ½ - ½
John George 1758 0 - 1
Mohammed Andeel 1670 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1726 = (5178 + 400 * (1 - 1)) / 3)

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