Colin Sinclair defeated Oleksii Krutykh 6-1 6-2 in the M15 Antalya 18 round of 32 on clay. The upset overturned the form book — Oleksii Krutykh came in ranked #456, leading the head-to-head 1–0. Colin Sinclair claimed a first win over Oleksii Krutykh in two meetings, levelling the head-to-head at 1–1.
Sinclair C. took it in straight sets.
Colin Sinclair beat Oleksii Krutykh 6-1 6-2. Umpiry, "Colin Sinclair vs Oleksii Krutykh — M15 Antalya 18 Round of 32", https://umpiry.com/match/2021-05-05/krutykh-vs-sinclair-m15-antalya-18-r32?utm_source=cite (as of 5 May 2021).