As a result, the US-American Brandon Nakashima enters the semi final.

The four quarter-final matches will be played on Friday at the BOSS OPEN. Including local hero Jan-Lennard Struff, as well as last year's winner Frances Tiafoe.

Warsteiner defeats Frenchman Arthur Rinderknech in two sets 6-4, 7-6 (0) at the BOSS OPEN.

The last four quarter-final matches are scheduled for Thursday. Stars such as Ben Shelton, Matteo Berrettini and Jan-Lennard Struff will hit the center court.

Lorenzo Musetti prevails in three sets against Dominik Koepfer. Defending champion Frances Tiafoe gives Yannick Hanfmann a run for his money in two sets.

Last year's German finalist defeats Italian Flavio Cobolli in two sets. Three-time Grand Slam champion and Olympic champion Andy Murray fails to repeat his successful run from 2022.

The first round of 16 matches are already scheduled for Wednesday at the BOSS OPEN. Among them are two German local heroes, the defending champion and Germany's top doubles team.

Italy's young star Lorenzo Musetti only converted his eighth match point against France's newcomer Giovanni Mpetshi Perricard. Matteo Berrettini even had to fight for nearly three hours.