Event: B Division

Opponent Rating Result
P Ged Murphy 1519 0 - 1
Kevin M Waterman 1591 ½ - ½
Peter Harker 1732 0 - 1
Jim A Rogers 1653 ½ - ½
Joshua Lloyd-Smith 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1219 = (6495 + 400 * (1 - 2)) / 5)

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