Daniil Medvedev's US Open campaign ended in a first-round defeat to Frenchman Benjamin Bonzi, with the Russian's on-court outburst sparking concern among players and fans.
What happened?
The incident occurred when a photographer stepped onto the court, interrupting play, and chair umpire Greg Allensworth ruled Bonzi got another first serve, prompting Medvedev's furious reaction.
Medvedev confronted Allensworth and implored the crowd to boo him for the call.
Why it matters for Daniil Medvedev
The 2021 US Open winner has struggled in Grand Slam matches this year, with a 1-4 record, including first-round exits at Wimbledon and the French Open.
Medvedev's ranking has slipped to world No. 13, and his on-court behavior has raised concerns about his mental health.
What comes next?
German tennis legend Boris Becker has suggested Medvedev seek "professional help" to address his on-court behavior.
Andrey Rublev, Medvedev's close friend and godfather to his children, has offered support, saying "If he wants to change and needs help he has me, a lot of other friends and family that will help him."
Rublev has previously been open about working with a psychologist on his mental health after having violent meltdowns on the court.
Medvedev's US Open defeat was his third first-round Grand Slam exit of the year, and he slammed his racket against the ground repeatedly until it was destroyed.
Frances Tiafoe said "People don’t understand. You’re travelling a lot. He holds himself to a super high standard," and hopes to see Medvedev play to his capable level.
During his tirade against Allensworth, Medvedev accused the chair umpire of wanting to go home early, saying "Are you a man? Are you a man? Why are you shaking? What’s wrong, huh? Guys, he wants to leave. He gets paid by the match, not by the hour."
Bonzi went on to win in five sets, having previously upset Medvedev at Wimbledon.
Medvedev's outburst has sparked a debate about the pressure and stress of competing at the highest level in tennis.
As the tennis world reacts to Medvedev's outburst, it remains to be seen how he will respond to the concerns about his mental health and on-court behavior.