This was the first edition of the tournament. Ann Li won her first WTA Tour title, defeating Camila Osorio in the final, 6–1, 6–4. Although this was Li’s second final of her career, not counting Melbourne tournament earlier in the year which was cancelled due to lack of schedule.

https://en.wikipedia.org/wiki/2021_Tenerife_Ladies_Open_%E2%80%93_Singles