Event: B Division

Opponent Rating Result
P Ged Murphy 1480 1 - 0
Ajay Selvan 1519 ½ - ½
Paul Weightman 1570 1 - 0
Mark Turner 1437 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1802 = (6006 + 400 * (3 - 0)) / 4)

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