Event: Division 5

Opponent Rating Result
J Andrew Borkowski 1763 ½ - ½
James Bartram 1655 1 - 0
Piotr Zielinski 1593 1 - 0
Mark Thwaites 1475 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1922 = (6486 + 400 * (3 - 0)) / 4)

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