At the ATP tournament in Marseille, France, Ruben (ATP-113) was not able to reach the second round. Ninth seed Karen Khachanov (ATP-47) from Russia was too strong.
Ruben qualified for the main draw via the qualifications. The Belgian played a good match, but the first set went 3-6 to the Russian. The second set was decided in the tiebreak, which Khachanov won 6-7(2). The match lasted 1 hour and 16 minutes.