Before he fights in the #heavyweight main event Saturday on ESPN+, get the story of how #zhileizhang became the heavyweight he became with this behind the scenes special documentary Next up for Top Rank Boxing, Five months after Chinese southpaw Zhilei “Big Bang” Zhang shook up the heavyweight division with a stunning knockout, he’ll look to do it again. Zhang’s rematch with British superstar Joe Joyce — Saturday, Sept. 23 at OVO Arena Wembley in London — will stream live and exclusively in the U.S. on ESPN+. Zhang-Joyce II, the return of two-time light heavyweight title challenger Anthony Yarde against Ricky Summers, and additional undercard action begins at 2 p.m. ET/11 a.m. PT. Try ESPN+ For Free: https://watch.espnplus.com/toprank/ Subscribe to our YouTube channel to get notified about the latest highlights, free full fights, and fight week content as it's posted. Follow Top Rank on Twitter: http://www.twitter.com/trboxing Follow Top Rank on Instagram: http://www.instagram.