Jan Lennard Struff defeated Yannick Mertens 7-5 7-6 in the Munich qualifying round of 32 on clay.
Struff J. took it in straight sets.
Jan Lennard Struff beat Yannick Mertens 7-5 7-6(6). Umpiry, "Jan Lennard Struff vs Yannick Mertens — Munich Qualifying Round of 32", https://umpiry.com/match/2010-05-01/mertens-vs-struff-munich-q32?utm_source=cite (as of 1 May 2010).