LAS VEGAS -- Floyd Mayweather Sr. is a proud member of the old-school boxing club who can't wait for UFC champion Conor McGregor and his sport to be humbled, the sweet science clearly distinguishing itself from UFC's brutishness.
"This one fight here might put UFC in its place," said the father-trainer of Floyd Mayweather Jr., who will take on McGregor on Saturday night at T-Mobile Arena. "When this man (McGregor) takes a good ass-whipping, the UFC doesn't want to see that.
"Floyd boxing a guy who's never had a glove on? (McGregor's) going to get the (stuff) beat out of him."
That supreme confidence in his 40-year-old unbeaten son is more than ego and pride.
Several others deeply embedded in boxing also are convinced that McGregor, who is 21-3 in mixed martial arts bouts, has less than a puncher's chance against a boxer who has won all 49 of his bouts.
"Conor McGregor will make more money than he's ever made," former world champion boxer James Toney said, "but he's not a fighter in this game.
"He has no chance.
"McGregor's a UFC fighter. He doesn't know how to punch.
"He's going to swing for the fences, get counter-punched and Floyd's knocking him out in two to three rounds."
Toney, a former multi-division champion, participated in the other recent major UFC vs. boxing match, getting submitted in the first round by former two-division champion Randy Couture seven years ago this week in an MMA-rules fight.