Colin teamed up with world number 28 Scott Lipsky for the newly formed (replacing New Haven) ATP250 at Winston-Salem Open played at Wake Forest University.
Colin teamed up previously with Lipsky in April this year when they won a Challenger together in Athens.
In the first round they were drawn against number 2 seeds and world number 13 Matkowski and Frystenberg from Poland. Lipsky and Fleming produced a fine display to beat the Poles 3-6 7-6 (10-4).
In the next round they faced another tough test against Treat Conrad Huey and Cory Parr. Again they produced a strong display to win in straight sets 7-6 6-4.
This setup a semi final clash with the Israeli pair Erlich and Ram. The Israeli pair were too strong on the day and won 6-4 6-4, and went on to take the title.