Knock on wood if you're with me. Take a look back on 20 years of the best #HardKnocks moments. #HBO Subscribe to HBO on YouTube: https://goo.gl/wtFYd7 Get More Hard Knocks Official Site: https://itsh.bo/hard-knocks-series Instagram: https://www.instagram.com/hardknockshbo Facebook: https://www.facebook.com/HardKnocksHBO Get More HBO Official Site: https://itsh.bo/dotcom Twitter: https://twitter.com/hbo Instagram: https://www.instagram.com/hbo Facebook: https://www.facebook.com/hbo Hard Knocks: Best Moments | 20 Year Anniversary (Mashup) | HBO