Event: Division Four

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Opponent Rating Result
Michael J Harrington 1601 0 - 1
Christopher J Evans 1707 1 - 0
Sean Doherty 1495 0 - 1
Robert Georgel Grozea 1790 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1448 = (6593 + 400 * (1 - 3)) / 4)

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