Event: Division Two

Opponent Rating Result
Derek Backhouse 1735 0 - 1
Alex D Pready 1795 ½ - ½
Terry W Walker 1797 0 - 1
Richard F Collett 1363 1 - 0
Jim A Gillespie 1525 ½ - ½
David Hulme 1822 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1540 = (10037 + 400 * (1 - 3)) / 6)

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