Blood sport: Bare-knuckle fighting emerges from shadows | ESPN MMA

Is bare knuckle boxing an ultra-violent fringe sport, or does it have a legitimate future? ✔ For more UFC, sign up for ESPN ✔ Get the ESPN App: ✔ Subscribe to ESPN on YouTube: ✔ Subscribe to ESPN FC on YouTube: ✔ Subscribe to NBA on ESPN on YouTube: ✔ Watch ESPN on YouTube TV: ESPN on Social Media: ► Follow on Twitter: http