Event: Division 4

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Opponent Rating Result
Mal Hanlon 1746 0 - 1
Richard Devonport 1448 ½ - ½
Bob Steele 1487 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1294 = (4681 + 400 * (0 - 2)) / 3)

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