Keith Thurman looking fast & explosive on heavy bag & mits ahead of Shawn Porter fight<br /><br />In this Keith Thurman vs. Shawn Porter video, Keith Thurman works out ahead of his Thurman vs. Porter fight on CBS<br /><br />Footage courtesy of Showtime Sports<br /><br />For more Boxing and MMA videos log onto http://www.fighthubtv.com<br />Like us:http://on.fb.me/xWRC1f<br />follow us:http://bit.ly/wACkIv<br />Boxing videos! MMA videos! uploaded daily! Subscribe:http://goo.gl/vnzIb
