Event: MCA Division 4

Opponent Rating Result
Ben Gannon 1426 1 - 0
John F Lambert 1750 0 - 1
John J Grady 1613 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1730 = (4789 + 400 * (2 - 1)) / 3)

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