Holger Rune suffered an Achilles injury in his semifinal against Ugo Humbert at the 2025 Stockholm Open. The Dane led 6-4, 2-2, but had to retire after injuring his left leg.On Tuesday, Rune uploaded a photo of himself in bed at a private hospital (Aleris-Hamlet) in Copenhagen, Denmark. He gave a thumbs-up and confirmed that the surgery had gone well."Hi everyone. Surgery went really well today. Thank you for all your incredible messages and support ❤️ I will keep you updated on my recovery. But now rest and heal," he captioned the post. View this post on Instagram Instagram Post22-time Grand Slam champion Rafael Nadal, American sensation Ben Shelton and former German player Boris Becker were among those to wish Rune a speedy recovery."Get well soon!" Nadal commented."Get well soon and make full recovery!" Becker added.Shelton added emojis that conveyed the same sentiment.Comments sectionHolger Rune reveals details regarding his injuryHolger Rune of Team Europe returns against Francisco Cerundolo of Team World during day two of Laver Cup 2025 at Chase Center on September 20, 2025 in San Francisco, California. (Photo by Clive Brunskill/Getty Images for Laver Cup) - Source: GettyHolger Rune announced in an Instagram post that his Achilles tendon was "fully broken on the proximal part." The typical recovery timeline for such an injury is three to six months.“It’s gonna be a while before I can step on court again,” Rune wrote on Instagram. “It’s tough. I had so much joy on court in Stockholm and it’s unbearable to think that I will not feel this energy for some time now.“My Achilles is full broken on the proximal part meaning I need operation already next week and from here rehabilitation. Thank you for all your support now and always. Without you nothing would be the same. See you as soon as possible.”Holger Rune's highlight of the season was his triumph at the Barcelona Open, where he defeated Carlos Alcaraz 7-6(6), 6-2 in the final. He also reached the final at Indian Wells. Earlier this year, he stated that his goal is to win as many Grand Slams as possible and become the World No. 1.