Ryan Nijboer defeated John Sperle 6-4 4-6 6-3 in the M15 Duffel 1 quarter-final on clay.
Nijboer R. came through in three sets.
Ryan Nijboer beat John Sperle 6-4 4-6 6-3. Umpiry, "Ryan Nijboer vs John Sperle — M15 Duffel 1 Quarter-final", https://umpiry.com/match/2023-06-16/nijboer-vs-sperle-m15-duffel-1-qf?utm_source=cite (as of 16 June 2023).