Event: Division 2

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Opponent Rating Result
Mark Heffer 1675 1 - 0
Ian Spicer 1432 0 - 1
Kelvin Hunter 1666 ½ - ½
Chris Braithwaite 1667 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1710 = (6440 + 400 * (2 - 1)) / 4)

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