HBO Boxing Insider Kieran Mulvaney sets the stage as two heavyweight warriors collide in a world title bout. WORLD CHAMPIONSHIP BOXING: Joshua vs. Klitschko airs Saturday, April 29 at 11pm ET/PT on HBO. Subscribe to HBO Boxing YouTube channel: http://www.youtube.com/hboboxing HBO Boxing on Instagram: http://instagram.com/hboboxing HBO Boxing on Snapchat: https://www.snapchat.com/add/hboboxing HBO Boxing on Facebook: https://www.facebook.com/hboboxing HBO Boxing on Twitter: https://twitter.com/HBOboxing HBO Boxing Podcast on Soundcloud: https://soundcloud.com/hboboxing HBO Boxing Official Site: http://www.hbo.com/boxing HBO Sports on HBO GO® http://itsh.bo/ij8oqS. Inside HBO Boxing: http://www.insidehboboxing.com/