Event: Reading-Chess-Open

Opponent Rating Result
Zain Jafri 889 0 - 1
Zain Jafri 889 0 - 1
Alfie Smith 1322 1 - 0
Livia Sharma 0 1 - 0
Nathan Magee 0 0 - 1
Samuel Vanstone 1436 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

623 = (4536 + 400 * (2 - 4)) / 6)

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