Event: Burton one-hour tournament

Opponent Rating Result
Joe Parker 1475
Vinod M Fernando 2038
Anushka M. Ramawickrama 1679
Piotr Natoniewski 1438
Roger Bird 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

0 = (0 + 400 * (0 - 0)) / 0)

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