Daniel Altmaier defeated Tallon Griekspoor 6-1 6-3 in the Roland Garros qualifying round of 128 on clay. The upset overturned the form book — Tallon Griekspoor came in ranked #58.
Altmaier D. took it in straight sets.
Daniel Altmaier beat Tallon Griekspoor 6-1 6-3. Umpiry, "Daniel Altmaier vs Tallon Griekspoor — Roland Garros Qualifying Round of 128", https://umpiry.com/match/2020-09-21/altmaier-vs-griekspoor-roland-garros-q128?utm_source=cite (as of 21 September 2020).