Conor McGregor stopped Jose Aldo with one spectacular punch just 13 seconds into the first round, backing up his bravado and claiming the undisputed featherweight title at UFC 194.<br />McGregor (19-2) finished the fight in Las Vegas with an electrifying exchange shortly after the opening bell, slipping Aldo's lead right and cracking Aldo on the jaw with a huge left hand.<br />Aldo had won 18 consecutive fights over the last 10 years, but nothing seems to slow McGregor.<br />"He is already beaten," McGregor said prior to the fight.<br />"I look in his eyes, and I see someone who knows his era is over.<br />It's a new era.<br />It's my era.<br />I almost want to comfort him.<br />I want to say, 'Don't worry.<br />It will all be over soon.'"