Event: Open

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Opponent Rating Result
Luke Boynton 173 0 - 1
Wojciech Czopek 154 1 - 0
Nigel S Towers 162 1 - 0
Fred S Dickson 135 1 - 0
Luke Boynton 173 0 - 1
Wojciech Czopek 154 1 - 0
Nigel S Towers 162 ½ - ½
Fred S Dickson 135 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

306 = (1248 + 400 * (5 - 2)) / 8)

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