Blame it on the hair.
Caroline Wozniacki got her blond braid caught in her racquet while hitting a forehand in her second-round US Open match Thursday against Aliaksandra Sasnovich, and she gamely tried to hit a backhand on the next shot, with her hair still entangled.
''I almost took my head off,'' Wozniacki told reporters later.
''It was really tangled up good, so I didn't have a chance.''
Wozniacki lost the point, but she didn't lose her sense of humour.
Once she got her hair and her racquet separated, she had no choice but to laugh at herself.
The 24-year-old Dane, seeded 10th, went on to win 6-3, 6-4, and she later tweeted a clip of the entanglement to her 675,000 followers.
Wozniacki explained that such snags used to happen all the time before she started braiding her hair, but this was the first post-braid incident.
''It's one of those things,'' she said. ''Us women, we keep it interesting.''