Event: Division One

Opponent Rating Result
Richard J McMichael 2212 ½ - ½
Greg Billenness 1879 ½ - ½
Chris B Baker 1980 1 - 0
Jonathan PJ White 1997 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2017 = (8068 + 400 * (1 - 1)) / 4)

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