Nys and Edouard Roger-Vasselin defeated Sadio Doumbia and Fabien Reboul 2-1 in the Round of 16 at the Cincinnati Open. The pair had reached the Round of 16 after winning on August 18, when Nys and Roger-Vasselin beat Johnson and Zielinski 2-1 with a 10-3 match tiebreak and Doumbia and Reboul advanc…