Khachanov back to US Open semi-finals with walkover

Karen Khachanov reached the US Open 2026 semi-finals after opponent Alexander Blockx was forced to retire in the third set, trailing 6-2, 7-5, 3-2. The match at Arthur Ashe Stadium lasted 1 hour and 38 minutes, ending when Blockx could not continue due to injury. Blockx, the 21-year-old Belgian, entered the match with a pre-existing rib injury. During the match, he also suffered from a right ankle problem and thigh issue, requiring strapping and a medical timeout. Despite battling on, Blockx could not match Khachanov's pace. Khachanov, 30, from Russia, played confidently and controlled the match. He said: "I was preparing really well for that match up. It's not easy because I feel I was dominating then I felt he was struggling more and more. He was suffering, but I wanted to keep the energy there. I wish him a speedy recovery but I'm super happy I'm in the semis." This is Khachanov's first US Open semi-final since 2026, and first Grand Slam semi-final since the 2026 Australian Open. The former world No. 8, now ranked 50th, is playing his first major with such a low ranking since 2026. On his way to the quarter-finals, he defeated third seed Felix Auger-Aliassime and 14th seed Learner Tien. In the semi-finals, Khachanov will face the winner of the match between top seed Alexander Zverev and Botic van de Zandschulp. The match promises great drama as Khachanov is in fine form at Flushing Meadows. This event once again highlights the harshness of top-level tennis, where injuries can change the course at any moment. Belgian fans regret Blockx's loss but look forward to Khachanov's performance in the next round.