Event: Division 5

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Opponent Rating Result
Simon Layhe 117 1 - 0
Joe Hirst 93 0 - 1
Alberto Gissi 117 1 - 0
Neville S Jones 104 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

208 = (431 + 400 * (2 - 1)) / 4)

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