Event: West of England Counties Online Championship

Opponent Rating Result
Christopher J Archer-Lock 1200 0 - 1
Roy A Ludlow 1200 1 - 0
Matthew Reekie-Black 1619 ½ - ½
Peter D Dimond 1200 0 - 1
Gary Trudeau 1807 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1245 = (7026 + 400 * (1 - 3)) / 5)

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