Event: September Quickplay

Opponent Rating Result
Janos Mehes 1467 0 - 1
J Alan Stockley 1378 0 - 1
Chris Swales 1619 0 - 1
Joe Vera-Sanso 1405 1 - 0
Paul Conaghan 0 0 - 1
Laura Holdforth 1214 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1047 = (7083 + 400 * (2 - 4)) / 6)

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