Antonia Lottner defeated Viktorija Golubic 6-7 6-4 6-1 in the Lenzerheide $25K round of 16 on clay. The upset overturned the form book — Viktorija Golubic came in leading the head-to-head 1–0. Antonia Lottner claimed a first win over Viktorija Golubic in two meetings, narrowing the head-to-head to 1–1.
Lottner A. came through in three sets.