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.
The usually stoic Czech disagreed with chair umpire Marta Mrozinska over a call when she put away an easy overhead at 5-5, deuce, in the third set.
And with no hawkeye technology in place to give a definitive decision, the call stood against Pliskova, who ended up losing her serve and Sakkari went on to win the set, and the match, 7-5.
Pliskova did not shake Mrozinska's hand after the match and instead smashed her racket several times against the side of the umpire's chair, breaking the wood.
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. "I just tried to build my points, to build a little bit of space and open the court, and tried to make winners", Halep said. World No 2 Caroline Wozniacki began her campaign with a comfortable 6-1, 6-4, victory over Belgian Alison van Uytvanck. The victory means the 24-year-old Gavrilova recorded her first top 10 victory of the year, and her first back-to-back match wins since Acapulco in February.