Event: Worcestershire Rapidplay league

Opponent Rating Result
Peter W Lawrence 1657 ½ - ½
Eric Horwill 1637 ½ - ½
John F Varilone 1619 ½ - ½
Peter W Lawrence 1657 1 - 0
Eric Horwill 1637 1 - 0
John F Varilone 1619 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1838 = (9826 + 400 * (3 - 0)) / 6)

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