WATCH: Stefanos Tsitsipas left fuming over buzzing Cincy fan “imitating a bee”

WATCH: Stefanos Tsitsipas sits down with Tennis Channel after his opening win at the Western & Southern Open

There were plenty of twists and turns in Stefanos Tsitsipas second-round victory over Ben Shelton at the Western & Southern Open, but one bizarre interruption from a fan left the Greek player fuming—and many fans scratching their heads.

Deep in the second set, Tsitsipas stopped before his serve a few times to swat away what he thought was a bee buzzing around him—only to realize the sound was coming from the stands.

“There’s a person imitating a bee behind me,” he informed umpire Nacho Forcadell. “It’s a buzz right before I serve.”

Although Forcadell assured Tsitsipas that he would “take care of it,” the Greek player took matters into his own hands. Tsitsipas walked over to the stands behind the baseline to ask who was responsible, and a fan was quick to point out a woman sitting in the front row as the culprit.

“It has never happened in my career,” Tsitsipas told Forcadell. “I know they were supporting [Ben], but…

“I want her out. She needs to go.”

Ultimately the umpire settled for warning the fan of her impending ejection should she repeat the buzzing, and she quickly apologized to a buzzed-off Tsitsipas.

The No. 4 seed soon put the incident behind him, closing out his victory over Shelton 7-6 (3), 7-6 (2) to move into the round of 16. The 2022 finalist will take on Hubert Hurkacz next on Thursday.