Event: Stockton Heath Club Championship

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Opponent Rating Result
Alfie Gardiner-Johnson 1050 0 - 1
Yau Chai Aiden Leung 801 0 - 1
Oliver Ducker 1014 0 - 1
Kento Pilditch 991 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

764 = (3856 + 400 * (1 - 3)) / 4)

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