Event: Summer DEK Rapid (9|2)

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Opponent Rating Result
Adam Blackbourn 1444 1 - 0
Alan F Page 1787 1 - 0
Michael J Gibbons 1825 0 - 1
Adam Blackbourn 1444 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1625 = (6500 + 400 * (2 - 2)) / 4)

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