Event: Division 2

Opponent Rating Result
Kevin J Spillane 1678 ½ - ½
Kenneth J McNulty 1697 0 - 1
Steven P Heath 1533 1 - 0
Brian Homewood 1653 ½ - ½
Peter Nixon 1426 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1677 = (7987 + 400 * (2 - 1)) / 5)

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