Event: Division B

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Opponent Rating Result
Paul Ashton 1553 1 - 0
Shaun Tumelty 1480 ½ - ½
Anthony DB Wilkinson 1585 1 - 0
Steve G Hughes 1495 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1728 = (6113 + 400 * (2 - 0)) / 4)

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