Daniil Medvedev has been fined just over $17,000 following his extraordinary outburst at the chair umpire in his fiery Australian Open semifinal win over Stefanos Tsitsipas on Friday night.
Medvedev took aim at chair umpire Jaume Campistol when he accused Tsitsipas of receiving illegal coaching from his father in the stands.
Tsitsipas did not escape a financial penalty, with the Greek fourth seed fined around $7,000 for coaching.
"Are you mad? Are you mad?" Medvedev screamed at Campistol during the second set of his 7-6 (7/5), 4-6, 6-4, 6-1 win on Rod Laver Arena.
"Answer my question. Will you answer my question?"
Medvedev continued: "Oh my God, you are so bad, man. How can you be so bad in semifinal? Look at me. I'm talking to you."
Moments later, Medvedev called Campistol a "small cat".
The Russian was fined for a visible obscenity and unsportsmanlike conduct.
The financial penalty will not be felt too much by Medvedev, considering he will earn over $2.8 million if he wins Sunday night's final against Rafael Nadal and over $1.5 million if he finishes runner-up.
The world number two tried to play down the incident soon after the match, claiming he was not accusing Tsitsipas of "cheating".
"Before every return his [Tsitsipas's father] was talking Greek," Medvedev told his media conference.
"I don't know, maybe [if] he's saying, 'Come on, come on', there is no problem.
"I asked him [Campistol] if he [Tsitsipas's father] can talk. He said he can talk but he can't coach.
"Then I said, 'Do you speak Greek? If not, the guy is talking, talking, talking'. I don't know what he says.
Medvedev — who shares a heated rivalry with Tsitsipas — said he should not have spoken to Campistol in the manner in which he did.
"I do regret it 100 per cent, but again in the heat of the moment, I just lost it," he said.
Tstispas said he was unimpressed with Medvedev's behaviour.
"I don't pay attention to the stuff," he said.
Tsitsipas claimed he was not receiving coaching from his father.
"I wasn't. You saw me the other day, losing the score twice in two of my matches," he said.
"I cannot hear anything when I'm playing. It's impossible. Having the crowd being so loud in every single point, you have to have super hearing to be able to hear what your coach says."
Tsitsipas received a pay cheque of $895,000 for making the semifinals.
