Event: B Division

Opponent Rating Result
Austin C Elliott 1918 ½ - ½
Robert M Furness 1956 0 - 1
Daniel Okorafor 1800 1 - 0
Michael I Connor 1760 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1859 = (7434 + 400 * (1 - 1)) / 4)

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