Event: Worcestershire Rapidplay league

Opponent Rating Result
Joseph D Friar 1978 0 - 1
David Close 1688 ½ - ½
Andrew S Whitten 1730 1 - 0
Joseph D Friar 1978 0 - 1
David Close 1688 ½ - ½
Andrew S Whitten 1730 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1799 = (10792 + 400 * (2 - 2)) / 6)

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