Event: Division One

Opponent Rating Result
William J Foo 2150 1 - 0
Peter M Gayson 2126 ½ - ½
Jonathan W Arnott 2259 0 - 1
Elis D Dicen 2187 0 - 1
Simon C Smith 1898 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2124 = (10620 + 400 * (2 - 2)) / 5)

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