The match ended when Botic van de Zandschulp retired.
Stefan Kozlov defeated Botic van de Zandschulp 6-3 1-0 RET after Botic van de Zandschulp retired in the 2021 Mexican Open third qualifying round on hard courts.
View full H2H
Source: Jeff Sackmann's ATP archive (CC BY-NC-SA) · Updated May 28, 2026