Sander Jong defeated Alex Knaff 6-4 6-3 in the M15 Saarlouis 1 round of 16 on clay.
Jong S. took it in straight sets.
Sander Jong beat Alex Knaff 6-4 6-3. Umpiry, "Sander Jong vs Alex Knaff — M15 Saarlouis 1 Round of 16", https://umpiry.com/match/2023-06-22/jong-vs-knaff-m15-saarlouis-1-r16?utm_source=cite (as of 22 June 2023).