Watch Johnny Manziel TKO Bob Menery in Ex-NFL Star's MMA Debut at UFC Apex

Watch Johnny Manziel TKO Bob Menery in Ex-NFL Star's MMA Debut at UFC Apex Former NFL quarterback Johnny Manziel appears to have found his new calling in a different sport. Manziel made his MMA debut on Saturday night at the UFC Apex in Las Vegas and defeated social media influencer Bob Menery by…