Subscribe to the HBO Boxing YouTube channel: http://www.youtube.com/hboboxing Postol pulled off the upset with a 10th round knockout against one the most exciting fighters and fearsome punchers in boxing. Crawford vs. Postol happens Saturday, July 23 live on pay-per-view beginning at 9pm ET/6pm PT. HBO Boxing on Instagram: http://instagram.com/hboboxing HBO Boxing on Snapchat: 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://itsh.bo/HQslC8. HBO Sports on HBO GO® http://itsh.bo/ij8oqS. Inside HBO Boxing: http://www.insidehboboxing.com/ Check out other HBO Channels HBO: http://www.youtube.com/hbo Game of Thrones: http://www.youtube.com/GameofThrones True Blood: http://www.youtube.com/trueblood Real Time with Bill Maher: http://www.youtube.com/RealTime HBO Documentary Films: http://www.youtube.com/HBODocs Cinem