Event: Division 5

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Opponent Rating Result
Martin J Chadwick 60 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-340 = (60 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Tilly Snape 50 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

450 = (50 + 400 * (1 - 0)) / 1)

Opponent Rating Result
Jamie D Jones 40 0 - 1
David Hackney 88 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-136 = (128 + 400 * (0 - 1)) / 2)