Jeff Fenech, the former trainer of two-time undisputed heavyweight champion Mike Tyson, believes his former boxer - if he trained for six weeks, right now - could knock Deontay Wilder out in a minute.
Tyson is regarded as one of the hardest heavyweight punchers in history. He knocked out 44 out of 56 opponents, and still holds the record for being the youngest ever heavyweight champion, when at 20-years-old he knocked out Trevor Berbick in 1986.
Tyson retired from the sport in 2005.
Tyson, 53-years-old, recently discussed Wilder's February stoppage loss to Tyson Fury.
In his 42 victories, Wilder knocked out 41 opponents. In the sole victory that went the distance, Wilder knocked out Bermane Stiverne in the first round of their rematch.
Fenech views Wilder as a big puncher, but believes the hard-hitter falls apart once tagged to the chin.
"Boxing's not the same now. I'd guarantee that if Mike Tyson trained for six weeks, he'd knock Wilder out in a minute," Fenech told Sporting News.
"He would hit them. If these guys are getting knocked out by Tyson Fury - who's a great fighter, but not a huge puncher - Tyson would kill these guys. They're not on the same level today.
"'Mike today, I reckon if he trained he could still beat these guys. Fury's got these other skills, but Deontay Wilder's got a punch and nothing else. If you punch him, it's over. And Mike don't miss."
Wilder and Fury are scheduled to collide in a trilogy fight in the fall, with the third contest being targeted for the month of October.