Daniil Medvedevs latest tantrum on thetennis court has proven to be a costly one.The former world No. 1 was fined a total of $42,500 by theU.S. Open on Wednesday following his outburst in the first-round of the tournament over the weekend. Medvedev, who previously won the Grand Slam tournament in 2021, was docked $30,000 for unsportsmanlike conduct and an additional $12,500 for racket abuse.The fine followed the Russian tennis players heated disagreement with chair umpire Greg Allensworth, who allowed opponent Benjamin Bonzi another first serve in their matchup Sunday after a photographer walked on the court at Louis Armstrong Stadium.CLICK HERE FOR MORE SPORTS COVERAGE ON FOXNEWS.COMThe incident took place during the third set, with Medvedev a point away from elimination.After Bonzi missed his first serve, a photographer left his position and began walking alongside the court. Allensworth instructed the photographer to get off the court and awarded Bonzi another first serve, which Medvedev objected to.Medvedev was booed by the crowd, and in his typical fashion, he continued to rile the fans, blowing them kisses.US OPEN PHOTOGRAPHER CLAIMS HE'S 'TOTALLY INNOCENT' AFTER BEING AT CENTER OF PLAYER'S MELTDOWNBonzi lost the point and eventually the game. Medvedev went on to win the following set but lost the match 6-3, 7-5, 6-7 (5), 0-6, 6-4.After the match,Medvedev defended his stance, arguing that the photographers disturbance was not long enough to warrant another first serve. He also predicted that a hefty fine was on its way."Im getting big fine enough, so if I speak Im in big trouble, so Im not going to speak," he said.Medvedev is no stranger to outbursts on the court especially at the U.S. Open.At the2019 U.S. Open, he notoriously got into a war of words with fans in a post-match interview when he thanked them for viciously booing him."Thank you all, guys, because your energy tonight gave me the win. Because if you werent here, guys, I would probably lose the match because I was so tired," he said at the time. "I was cramping yesterday. It was so tough on me to play. So, I want all you to know when you sleep tonight, I won today because of you," he added as the booing continued.The Associated Press contributed to this report.Follow Fox News Digitals sports coverage on X, and subscribe to the Fox News Sports Huddle newsletter.