Event: A&B Division

Opponent Rating Result
Stephen Cole 1923 ½ - ½
Virgil Szekely 2172 1 - 0
Steven B Booth 1919 1 - 0
Stephen W Dauber 2057 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2318 = (8071 + 400 * (3 - 0)) / 4)

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