Maximilian Marterer defeated Sander Arends 7-6 3-6 6-3 in the Germany F19 round of 16 on hard.
Marterer M. came through in three sets.
Maximilian Marterer beat Sander Arends 7-6(4) 3-6 6-3. Umpiry, "Maximilian Marterer vs Sander Arends — Germany F19 Round of 16", https://umpiry.com/match/2013-10-14/arends-vs-marterer-germany-f19-r16?utm_source=cite (as of 14 October 2013).