Exclusive clip from the fourth installment of ALL ACCESS as boxing legend Floyd Mayweather meets talk show host James Corden ahead of his unprecedented matchup against UFC superstar Conor McGregor - live Saturday, Aug. 26 on SHOWTIME PPV from T-Mobile Arena in Las Vegas. Catch the 4-part series Fridays at 10PM ET/PT on SHOWTIME. ORDER THE FIGHT ON PAY-PER-VIEW: http://s.sho.com/2uuhKaN Follow SHOWTIME Sports Facebook: https://www.facebook.com/ShoSports/ Twitter: https://twitter.com/SHOsports Instagram: https://instagram.com/shosports Snapchat: https://www.snapchat.com/add/shosports Official Site: http://www.sho.com/sports Follow SHOWTIME Boxing Facebook: https://www.facebook.com/ShoBoxing Twitter: https://twitter.com/ShowtimeBoxing Instagram: https://instagram.com/showtimeboxing Tumblr: http://showtimeboxing.tumblr.com/ Follow INSIDE THE NFL Facebook: https://www.facebook.com/insidetheNFL Twitter: https://twitter.com/insidetheNFL Instagram: https://www.instagram.com/insidetheNFL/