Miguel Cotto knocked out Daniel Geale at 1:28 of the fourth round to retain his RING and WBC middleweight titles Saturday at Barclays Center in Brooklyn.

Cotto (40-4, 33 knockouts) put Geale down twice in the fourth, once with a devastating left hook and again with a right to punctuate a barrage of hard shots.

Geale (31-4, 16 KOs) told referee Harvey Dock that he had had enough after the second knockdown.

The Puerto Rican veteran was the naturally smaller man but it didn’t matter, as he thoroughly outboxed and ultimately badly hurt his Australian opponent.

Cotto’s left hook found a home most often to the body of Geale but it was a perfect hook to the chin that stood out most on Saturday. Geale fell flat on his back under the ropes. He got up and tried to fight back but Cotto, smelling blood, unloaded a series of shots for which Geale had no answer.

The final knockdown saved Geale from further punishment.

Cotto was making his first defense of the titles he took from Sergio Martinez in June of last year. He has now won three consecutive fights since he lost back-to-back bouts in 2012.

The fighters agreed to a catch weight of 157 pounds, three below the 160-pound limit.

A full report will follow shortly.