Ruben (ATP-249) was not able to advance to the final of the Challenger tournament of Koblenz (Germany, CH 80). He also stranded in the semifinal in the doubles.
Ruben played a strong tournament in Koblenz, but could not finish the job. In the semifinal, he bumped into the surprising Czech Tomas Machac (ATP-347). The Belgian had to surrender after 1 hour and 11 minutes with 2-6 and 4-6.
Also in the doubles Ruben (ATP D-183) was not able to reach the final together with Daniel Masur (ATP D-180). They lost with 6-2, 1-6 and 2-10 to home players Germans Julian Lenz (ATP D-207) and Yannick Maden (ATP D-1190).