Event: Region 17 West London

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Opponent Rating Result
Farrell Khoi Tza Foo 1180 ½ - ½
Harry Winward 1567 ½ - ½
Alisha Vyas 1953 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1700 = (4700 + 400 * (1 - 0)) / 3)

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