Event: Open Rapid-play

Opponent Rating Result
Donald J Mason 2161 0 - 1
Simon C Smith 1893 0 - 1
Phil Bull 1852 1 - 0
Donald J Mason 2161 1 - 0
Simon C Smith 1893 1 - 0
Phil Bull 1852 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2102 = (11812 + 400 * (4 - 2)) / 6)

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