Event: Division 3

Opponent Rating Result
Peter J Collicott 1695 1 - 0
Jim Buis 1740 0 - 1
Anthony Taylor 1523 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1653 = (4958 + 400 * (1 - 1)) / 3)

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