Ruben (ATP-249) continues to perform strongly at the Challenger tournament of Koblenz (Germany, CH 80). In the quarterfinals he was too strong for the second seed.
Ruben won the Challenger tournament of Koblenz in 2017 and has again a great run this year. In the quarterfinals, he faced second seed Yannick Hanfmann (ATP-149). Ruben played a strong match and won 6-3 and 6-2.
On Saturday, Ruben will play in the semifinal against Tomas Machac (ATP-347). In the doubles, Ruben (ATP D-183) and Daniel Masur (ATP D-180) compete against home players Germans Julian Lenz (ATP D-207) and Yannick Maden (ATP D-1190) for a ticket for the final.