Former world No.1 Karolina Pliskova smashed the umpire's chair in frustration after she lost to Greece's Maria Sakkari in the second round of the WTA Italian Open.
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.
However, the line-judge deemed the ball to be out, and this decision was not over-ruled by umpire Marta Mrozinska.
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The 20-year-old Osaka failed to convert any of her six break points before conceding the match in just under an hour.
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.
Sakkari won the game and then served out the match to win 3-6 6-3 7-5.
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Karolina Pliskova is now the world number six in the women's singles rankings, and topped the pile as recently as July 2017.
It remains to be seen what action will be taken against Pliskova, but the world number five's twin sister may also face punishment.
Sakkari visibly winced as Pliskova vented her fury, taking several steps backwards before the Czech had stormed off, before shaking the umpire's hand.
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