WATCH: Jack Sock's 'You're guessing' rant at chair umpire in French Open is not a good sight

American tennis star Jack Sock got involved in a heated argument with the chair umpire in the ongoing 2020 French Open.

The entire incident happened during the 28-year-old's second-round defeat to Dominic Thiem on September 30.

Jack got involved in an angry exchange with the match official Aurelie Tourte after a call went against the American in the third set.

Sock was already 2-0 down to Thiem and things got even worse when his serve got deemed as long by the chair umpire.

During his heated argument with the official, Sock could be heard saying, "You're literally guessing. That's what you're saying".

HERE IS THE VIDEO:

Jack Sock vs Aurelie Tourte #RG20 (@Eurosport_RU ) pic.twitter.com/EjUBtGDcFP

— doublefault28 (@doublefault28) September 30, 2020

Thiem needed just 25 minutes to break 28-year-old Sock, a former top 10 player, three times and storm through the first set.

The Austrian third seed, beaten by 19-times Grand Slam champion Rafael Nadal in the last two Roland Garros finals, was brimming with confidence on his favourite clay surface after winning his first Grand Slam title at this month’s U.S. Open.

“I’m very happy,” Thiem said in an on-court interview. “I messed it up a bit in the third set, up 4-3 and 40-15.”

“I found myself in the tiebreak and he played very well, particularly in the second and third sets. I was lucky to save the three set points in the tiebreak.”

(With Reuters inputs)