Andy Murray wasn't maybe totally satisfied by his haircut or more probably some of his front hairs were disturbing him. He made a little on-court adjustment to it during his match against Rafael Nadal in London (ATP Finals 2015, Masters).

SQUIRREL RUNS ONTO COURT AND INTERRUPTS MATCH at 2015 US open

From the BNP Paribas Showdown in Madison Square Garden, Maria dances with a spectator first before Wozniacki tell Rory (her boyfriend) to come and then make him play a point against Sharapova. (NYC, 3/5/2012)

Novak Djokovic win the 3rd set against Stan Wawrinka but stay on his side of the court. Why ? He simply didn't realized that the set was already finished.

Svetlana Kuznetsova Cuts Hair Mid-Match | 2016 WTA Finals Singapore

Andy Roddick imitates Rafael Nadal during an exhibition night in Toronto. Milos Raonic, Serena Williams and Agnieszka Radwanska also took part of this event. (2012-11-16)