Event: Division 4

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Opponent Rating Result
David Collinson 1298 0 - 1
Barry Kocan 1607 0 - 1
Anthony McCool 1360 0 - 1
Adrian Grimes 1417 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1221 = (5682 + 400 * (1 - 3)) / 4)

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