Piers Morgan has ripped into Bryson DeChambeau - like many other golf fans - following the American's "snail-like antics" during The Northern Trust last week.
Morgan - who presents Good Morning Britain - took to Twitter to express his disgust at watching the 'Mad Scientist' take 2 minutes 20 seconds over a 10-foot putt on the 8th hole.
Things got even worse when the World No.8 spent more than three minutes to pace out a 70-yard wedge shot on the 16th hole.
Morgan, 54, shared a clip to his 6.75 million Twitter followers of DeChambeau missing the putt, and then went on his rant:
The former newspaper editor tweeted: "And after all that he missed the b***dy putt!"
"You’re destroying golf @b_dechambeau with your snail-like antics.
"Either speed up & stop being so wilfully disrespectful to spectators, viewers & other players - or quit & spare us this agony."
DeChambeau, 25, has since responded to the heavy criticism he has faced over the weekend.
"When people start talking to me about slow play and how I'm killing the game, I'm doing this and that to that game... that is complete and utter you-know-what. That's not fair," said DeChambeau.
"People say things behind people's back all the time and if they want to talk about it to my face, I'll gladly explain the whole situation.
"Because the way the PGA Tour policy is now for pace of play is not good the way they define it.
"They define it as the amount of time it takes to hit a shot.
DeChambeau is regarded as one of the game's most laborious players following a string of recent slow-play antics in recent years, and he was recently slammed by World No.1 Brooks Koepka for his snail-like behaviour on the course.
Bryson finished the week in a tie for 24th on 7-under par, nine strokes behind winner Patrick Reed.