Event: MCA Division 1

Opponent Rating Result
Fred Lang 1665 0 - 1
Matthew Battersby 1328 1 - 0
Ben Ellington 1707 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1567 = (4700 + 400 * (1 - 1)) / 3)

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