Event: B Division

Opponent Rating Result
Anthony J Lane 1705 1 - 0
Michael I Connor 1762 ½ - ½
Mahin Rughani 1824 0 - 1
David Kierman 1799 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1773 = (7090 + 400 * (1 - 1)) / 4)

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