Defending champion Carolina Marin on Tuesday pulled out of the Tokyo Olympics after suffering an Anterior Cruciate Ligament (ACL) tear in her left knee that will require surgery to heal.

The 27-year-old from Spain felt discomfort in her knee during training on Saturday and tests revealed that it's an ACL injury. "After the examination during the weekend and the medical consultation, I confirm that I have torn the ACL and both meniscus on my left knee. I will undergo surgery this week and start my recovery," Marin tweeted.