Event: Club Championship B Division

Opponent Rating Result
William Rowett 900 0(def) - 1
Richard Stevenson 1295 1 - 0
Geoff Mann 1446 0 - 1
Ollie Walton 1375 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1239 = (4116 + 400 * (1 - 2)) / 3)

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