Event: Reading-Chess-Open

Opponent Rating Result
Rory Wilson Rhodes 1666 1 - 0
Michael Celaya 1873 1 - 0
Daniel Dilworth 1653 0 - 1
Martin Czar 0 1 - 0
Steve Bartle 1865 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1491 = (7057 + 400 * (3 - 2)) / 5)

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