Despite the anger from the Austrian world number eight, he slightly made up for his outburst by handing the now-unusable equipment to a fan in the crowd.
World number six Pliskova had a number of run-ins with Mrozinska during the stormy match and now faces a heavy fine from the WTA.
What sanctions the women's tennis body will impose on Pliskova for her actions is not yet known.
However in the last set, tied at 5-5, Pliskova got into a lengthy argument with the chair umpire after she had an overhead smash called out. The ball, which was clearly in, was ruled out. Pliskova tried to show the chair umpire where the ball had landed inbounds on the clay court, but the umpire acknowledged that she "lost" the ball mark and therefore said the point should be awarded to Sakkari.
With the game in the balance on Pliskova's serve at 6-3, 3-6, 5-5 (30/30), an oversight from the umpire and line judge led the Czech to give up a costly break point that helped see Greece's Maria Sakkari claim victory.
During the match Pliskova had argued with the official on several occasions and after her furious reaction the Times says her coach Tomas Krupa "stuck his middle finger up at live TV cameras" and her twin sister Kristyna called for Mrozinska to be "blacklisted".