Event: U1800 Cup

Opponent Rating Result
Timothy J Wesson 1795 ½ - ½
Robert W Stephens 1788 1 - 0
Robert W Stephens 0 ½ - ½
Angus Irving 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1096 = (3583 + 400 * (2 - 0)) / 4)

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