Event: Division 5

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Opponent Rating Result
Chris Stainthorpe 1299 1 - 0
Martin Thompson 1389 ½ - ½
Nigel Surtees 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1163 = (2688 + 400 * (2 - 0)) / 3)

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