Event: Division 2

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Opponent Rating Result
Gary Corcoran 1736 1 - 0
Lee Boyes 1591 1 - 0
Martin Bond 1035 1 - 0
John Tate 1444 1 - 0
Paul G Day 1762 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1754 = (7568 + 400 * (4 - 1)) / 5)

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