Event: Silver Rook

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Opponent Rating Result
David P Hatfield 119 1 - 0
Callum Welsh 153 ½ - ½
Simon Skinner 116 0 - 1
Jonathan Moreton 112 0 - 1
Norman Carr 100 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

120 = (600 + 400 * (2 - 2)) / 5)

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