Defending Wimbledon champion Jannik Sinner experienced a frightening moment during his opening match at the All England Club on Monday afternoon.
The world number one lost his footing while pursuing a ball during a baseline rally against Serbia's Miomir Kecmanovic, collapsing heavily onto the Centre Court grass.
The incident unfolded at 2-2 in the third set, with Kecmanovic serving at 15-30.
Sinner's left leg buckled awkwardly beneath him as he went down, leaving the 24-year-old Italian clutching his leg and grimacing while lying motionless on the turf.
Jannik Sinner suffered a horror moment at Wimbledon
|REUTERS
Chair umpire Alison Hughes immediately descended from her position to assess the four-time Grand Slam winner's condition as spectators and officials watched anxiously.
Although the Italian managed to rise after several tense moments, he walked with a visible limp that initially alarmed onlookers.
Despite the concerning nature of the tumble, Sinner declined any assistance from medical staff and opted to carry on without treatment.
BBC viewers quickly took to social media after noticing what appeared to be blood seeping through his shoe and sock during subsequent games.
"Lawd that's a lot of blood coming from Sinner's sock and shoe," wrote one concerned fan on X, while another observed: "It doesn't look like a spill pattern, that's almost certainly blood oh my god."
Jannik Sinner suffered a fall that forced the umpire to intervene
|REUTERS
The fall appeared to affect both his knee and hip, with Italian reports describing an unnatural twisting motion as his legs splayed apart.
Sinner had endured a difficult start to proceedings, dropping the opening set 6-4 after Kecmanovic broke late to seize control.
BBC commentator Andrew Castle captured the mood around Centre Court following the fall: "He looks like he's definitely going to need the trainer. We hope it's not as bad as it looked."
VAYA CAÍDA DE #SINNER 🚨🇮🇹
— Iván Ramírez (@jivan_rh) June 29, 2026
El #1 del mundo sufre grave caída que termina con molestias en la cadera del lado izquierdo.
Aparatosa caída en el tercer set que afortunadamente no quedó más que en el susto
Sinner batallando en su debut en #Wimbledon ante el serbio Miomir… pic.twitter.com/ytQjwDHbYp
Fellow pundit Tim Henman suggested the defending champion's troubles ran deeper than the physical setback, noting an unusually inconsistent display peppered with unforced errors.
The Italian arrived at SW19 as overwhelming favourite to retain his crown, particularly given Carlos Alcaraz's continued absence through injury.
Sinner had not played a competitive grass-court match this summer prior to Monday's encounter.