Martin Damm defeated Nathan Ponwith 7-6 6-4 in the M15 Champaign 2 quarter-final on hard.
Damm M. took it in straight sets.
Martin Damm beat Nathan Ponwith 7-6(3) 6-4. Umpiry, "Martin Damm vs Nathan Ponwith — M15 Champaign 2 Quarter-final", https://umpiry.com/match/2021-09-17/damm-vs-ponwith-m15-champaign-2-qf?utm_source=cite (as of 17 September 2021).