Stefanos Tsitsipas became the latest player to lose his cool at the Shanghai Masters, accusing a chair umpire of having "no clue about tennis" and insisting on needing to "talk to a supervisor" during a lengthy rant.

Stefanos Tsitsipas had an angry outburst at a chair umpire during his Shanghai Masters match vs Daniil Medvedev, on Wednesday.

The Greek star was fuming as he received a time violation during his defeat by Daniil Medvedev in the fourth round of the Shanghai Masters.