Enraged by a line call that had gone against her at a key moment, Pliskova sensationally reacted to losing her match against Maria Sakkari by repeatedly striking the umpire's chair with her racquet, making a hole in the process. On the next point, Sakkari converted a break then served it out.
The world number six had a number of run-ins with Mrozinska during the heated encounter and now faces a heavy fine from the WTA.
The Czech went on to lose that game and the match 3-6, 6-3, 7-5 in two hours 21 minutes.
It was the first time Sakkari had beaten a top five player in her career.
With both players locked at 5-5 in the decisive set, Pliskova smashed home a victor which was incorrectly called out much to the dismay of the Czech Republic star.
Once the match ended, Pliskova shook hands with her opponent but when it came time for her to acknowledge the umpire, she instead raised her racket and slammed it into the umpire's chair at least twice before walking off the court.
After the match, Pliskova approached the umpire's chair and faked a handshake before unloading on the chair with her racket.
The decision prompted fury from fans online, some calling for the umpire to be removed from their position, whilst some claimed Pliskova went too far in her actions.