Event: Bob Burns 2019

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Opponent Rating Result
Fazal Rabbi 144 0 - 1
Andrew Walker 100 1 - 0
Sam Scurfield 137 0 - 1
Lee Crawford 147 0 - 1
Dave Young 79 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

41 = (607 + 400 * (2 - 3)) / 5)

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