Event: NSDCA Division 1

Opponent Rating Result
John P Ewens 1953 1 - 0
Jonathan LB Blackburn 2273 ½ - ½
David I Hulme 1764 0 - 1
Michael L Hancock 2020 0 - 1
Bartosz Fajfer 1965 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1835 = (9975 + 400 * (1 - 3)) / 5)

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