Event: Derbyshire Individual

Opponent Rating Result
Kevin J Gallagher 126 0 - 1
Jon Jenson 106 1 - 0
Nigel D Marshall 115 1 - 0
Ranjit Nath 157 0 - 1
Saurav Sunny 136 0 - 1
Michael D Boreham 130 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-5 = (770 + 400 * (2 - 4)) / 6)

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