Highlights of British heavyweight Anthony Joshua’s 15 victories all by way of KO. The up-and-coming knockout artist fights undefeated IBF World Heavyweight Champion Charles Martin as part of a SHOWTIME BOXING INTERNATIONAL telecast on Saturday, April 9th at 5PM ET/2PM PT on SHOWTIME. SHOWTIME Boxing on Facebook: https://www.facebook.com/ShoBoxing SHOWTIME Sports on Twitter: https://twitter.com/SHOsports SHOWTIME Sports on Instagram: https://instagram.com/shosports SHOWTIME Sports on Snapchat: shosports SHOWTIME Sports Official Site: http://s.sho.com/SPORTS SHOWTIME Sports on Showtime Anytime: http://s.sho.com/anytime Pound For Pound: http://s.sho.com/PoundForPound SHOWTIME Sports Documentaries: http://s.sho.com/ShoDocs Connect with SHOWTIME Online Find SHOWTIME on Facebook: https://www.facebook.com/showtime Follow @SHO_Network on Twitter: https://twitter.com/SHO_Network Find SHOWTIME on Instagram: https://instagram.com/showtime/ Find SHOWTIME on Youtube: https://www.youtube.com/user/