Event: Division 5

Opponent Rating Result
John Pocock 1441 0 - 1
Alan Johnson 892 1 - 0
Charles Steele 1442 0 - 1
Michael James 954 1 - 0
Charles Steele 1442 0 - 1
Kenneth B Heath 1169 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1090 = (7340 + 400 * (2 - 4)) / 6)

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