Ruben (ATP-162) has easily reached the quarterfinals of the Challenger tournament of Koblenz. He defeated the Frenchman Gregoire Barrere (ATP-246) in two sets.
After his victory over the seventh seeded in the first round Ruben also showed his form in his second match. He was too strong for the Frenchman Barrere and did not face any breakpoint at all during the match. After 50 minutes he easily won 6-2 and 6-2.
In the quarterfinals he will face Swiss Yann Marti (ATP-332) or Frenchman Kenny De Schepper (ATP-154).