Bradley did not merely outbox Abregu -- he outclassed him.
Throughout the bout, Bradley moved continuously to his right like a southpaw keeping Abregu frustrated. After Abregu threw a right, his feet would square up. Repeatedly, Bradley exploited this mistake to nullify his 4" height disadvantage by landing a jab to Abregu's centered abdomen causing the Argentine to drop his hands, then feeding him an overhand right. By the fourth, Abregu had a deep cut on his right eyelid, but it was in the seventh round that the fight turned a corner: Bradley accidentally headbutted Abregu flooring him, and subsequently Bradley landed a right uppercut that caused Abregu to attempt to clinch. Bradley continued to inflict damage with a free left hand. While Abregu never quit, he also never recovered.
Abregu eked out a round or two largely due to Bradley's lessened activity in the sixth and ninth stanzas, but overall he could not cut the ring off adequately on Bradley to let his hands go. In the fifth, the Argeninte did not connect with a single jab. (Overall, Bradley landed 159 of 531 punches to Abregu's 93 of 583.)
The fight was largely a test to see if Bradley could handle the additional seven pounds that the welterweight division requires him to carry on his frame and endure in opposing power. The current World Boxing Organization's Junior Welterweight Champion, Bradley moved up in weight in hopes of opening his options beyond other junior welterweight champions like Devon Alexander and Amir Khan for the potential bigger money of welterweights Floyd Mayweather and Manny Pacquiao.
A few weeks ago, Bradley's trainer Joel Diaz said, "I consider Manny Pacquiao the greatest fighter in the world." In a postfight interview with HBO after his victory, Bradley didn't hesitate to call Pacquiao out. He then focused his eyes into the camera and said he'd fight Devon Alexander, Marcos Maidana, and eventually named Amir Khan after first blanking on his name.
It should have been a happy moment, but whatever reckless anger Bradley bridled in the ring in pursuit of victory tonight, he released in that moment of that interview. Even in success, Bradley can be angry. Even as champion, he remains hungry. If boxing is lucky, he will stay that way for years to come.