(FILES) Denmark's Holger Rune reacts during his quarter-final men's singles match against Monaco's Valentin Vacherot at the Shanghai Masters tennis tournament in Shanghai on October 9, 2025. Denmark's Holger Rune announced on September 8, 2026, that he will return to competition next month having been sidelined for nearly a year due to injury. The 23-year-old former world number four will make his comeback in Denmark's Davis Cup tie against Bulgaria on September 18. (Photo by Hector RETAMAL / AFP via Getty Images)