Holger Rune ruptured his Achilles, to undergo surgery next week

Holger Rune said Sunday he has ruptured his left Achilles and will undergo surgery next week after leaving the BNP Paribas Nordic Open semifinal in Stockholm in visible distress on Saturday. The 22 year old Dane, ranked 11th, was leading Ugo Humbert 6-4, 2-2 when he pulled up while chasing a wide ball and was unable to continue.

Rune collapsed to the court clutching his lower left leg and was helped to his chair, where he was assessed by medical staff before retiring from the match. He left the stadium on one leg and later posted on Instagram that his "Achilles is full broken on the proximal part," adding that he needs an operation and rehabilitation. "Its gonna be a while before I can step on court again," he wrote. "Its tough. I had so much joy on court in Stockholm and its unbearable to think that I will not feel this energy for some time now."

Members of Rune's team and spectators were reported to have been shaken by the scenes in the arena. Humbert, who advanced to the final, said at his press conference that he felt sorry for Rune and hoped the injury would not be too serious, offering his best wishes.

Rune's mother also confirmed the diagnosis to journalists, and the...