Event: Division 1

Opponent Rating Result
Robert F Willmoth 2192 0 - 1
Richard A Bates 2368 ½ - ½
Andrew D Harley 2169 1 - 0
Simon Wilks 2166 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2124 = (8895 + 400 * (1 - 2)) / 4)

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