Event: Norfolk & Norwich Challengers

Opponent Rating Result
Murray Raff 1400 1 - 0
James Casey 1765 0 - 1
Jack Packwood-Clarke 1400 0 - 1
Mark Nicholls 1447 0 - 1
David W Moore 1447 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1252 = (7459 + 400 * (1 - 4)) / 5)

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