Event: Dave Welch 7200 League

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Opponent Rating Result
Mike Stoddart 1728 1 - 0
Brendan D Kane 1857 0 - 1
James Clarke 1783 1 - 0
Brian Butterworth 1600 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1942 = (6968 + 400 * (3 - 1)) / 4)

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