Event: Hillingdon Div 3

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Opponent Rating Result
Gabriele Martellotta 1417 1 - 0
Niranjan R Ramesh 1309 ½ - ½
Haobo Yang 1487 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1404 = (4213 + 400 * (1 - 1)) / 3)

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