Well, this is bee-zarre.
Tennis star Stefanos Tsitsipas confronted a female fan during his match Wednesday after he claimed she made buzzing noises in an attempt to distract him.
It all happened during Tsitsipas' match against Ben Shelton in the Cincinnati Masters ... when he thought a bee was following him around the court during play.
The No. 4-ranked player in the world made an attempt to swat at the apparent bug with his racket ... before he realized the noise appeared to be actually coming from a spectator sitting behind him.