Event: Summer League Section 1

Opponent Rating Result
Andrei Ciuravin 2017 0 - 1
John Thackray 1953 ½ - ½
Douglas Vleeshhouwer 2027 ½ - ½
David J Hambly 1795 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1948 = (7792 + 400 * (1 - 1)) / 4)

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