Event: Dons Club Challengers

Opponent Rating Result
Graham R Jones 1464 1 - 0
Chris Jones 1555 ½ - ½
Biran S Shah 1793 0 - 1
Yosif A Antonov 1618 1 - 0
John E Dolamore 1808 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1728 = (8238 + 400 * (2 - 1)) / 5)

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