Event: Dons Club Challengers

Opponent Rating Result
John E Dolamore 1772 0 - 1
Yosif A Antonov 1631 0 - 1
Colin R Payne 1698 0 - 1
Keith Bradley 1579 ½ - ½
Matthew J Morter 1539 0 - 1
Graham R Jones 1491 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1352 = (9710 + 400 * (0 - 4)) / 6)

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