Event: Welcome Back Rapidplay

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Opponent Rating Result
Daniel Downie 1501 1 - 0
Ian A Clack 1562 1 - 0
Ben Attwell 0 1 - 0
Daniel M Lambourne 2134 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1499 = (5197 + 400 * (3 - 1)) / 4)

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