Event: A&B Division

Opponent Rating Result
Bernard Price 1843 ½ - ½
Harry Tennant 1350 ½ - ½
Andrew M Smith 1911 0 - 1
Jonathan Sams 1835 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1635 = (6939 + 400 * (0 - 1)) / 4)

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