Event: Burton one-hour tournament

Opponent Rating Result
Roger Bird 0
Piotr Natoniewski 1438
David J Pickering 1735 0 - 1
Ryan L. Smith 1868
Vinod M Fernando 2038
Edmund M. Jones 1756
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1335 = (1735 + 400 * (0 - 1)) / 1)

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