2021 Koser Jewelers Tennis Challenge – Singles

Singles
2021 Koser Jewelers Tennis Challenge
Champion Nuria Párrizas Díaz
Runner-up Greet Minnen
Score7–6(8–6), 4–6, 7–6(9–7)

Madison Brengle was the defending champion, having won the previous edition in 2019, but lost in the second round to Lesley Pattinama Kerkhove.

Nuria Párrizas Díaz won the title, defeating Greet Minnen in the final, 7–6(8–6), 4–6, 7–6(9–7).