Terence Crawford retained his RING, WBO and WBC 140-pound titles with a one-sided 10th-round stoppage of game-but-outclassed Felix Diaz on Saturday at Madison Square Garden.

It was a typical performance from Crawford (31-0, 22 knockouts), a 29-year-old switch-hitter who fought out of the southpaw stance throughout the HBO-televised fight. The Omaha, Nebraska native took his opponent’s measure in the early rounds before figuring out the awkwardly athletic southpaw’s style and systematically beating him up over the rest of the fight.

Crawford outworked the 33-year-old 2008 Olympic gold medalist behind a stiff jab but occasionally absorbed a wild hook from the Dominican. Crawford landed the cleaner shots, mostly uppercuts and counter punches, while on the move in the middle rounds. Diaz (19-2, 9 KOs) had his moments, though, landing two big lefts in Round 7, but Crawford punished him with a body attack for his efforts.

In the late rounds, Crawford gave Diaz a frightful beating, lumping up the challenger’s face and breaking his fighting spirit. After Round 10, Diaz’s trainer Joel Diaz (no relation) called the fight off.

A full ringside report by Mike Coppinger will be posted shortly.