Event: Worcestershire Rapidplay league

Opponent Rating Result
Julie C Wilson 1724 1 - 0
Joseph D Friar 2033 0 - 1
Julie C Wilson 1724 1 - 0
Julie C Wilson 1724 1 - 0
Joseph D Friar 2033 0 - 1
Julie C Wilson 1724 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1960 = (10962 + 400 * (4 - 2)) / 6)

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