Lindolfo Delgado took his time Saturday night and then took out Luis Hernandez.

The Mexican junior welterweight contender badly hurt Hernandez with a left uppercut that landed just after the midway mark of the fourth round. Hernandez tried to hold Delgado, but the 2016 Olympian later landed three straight right hands that sent Hernandez to the canvas with 1:10 to go in the fourth round.

Referee Celestino Ruiz promptly stopped their scheduled eight-round bout, 1:53 into the fourth round, on the Efe Ajagba-Joe Goodall undercard at Tahoe Blue Event Center in Stateline, Nevada.

Monterrey’s Delgado, 28, improved to 19-0 and recorded his 14th knockout. Chihuahua’s Hernandez (23-4, 20 KOs) lost by knockout for the first time in his eight-year pro career.

Before he drilled Hernandez with the abovementioned uppercut, Delgado drilled Hernandez with a left hook barely 45 seconds into the fourth round.

Delgado boxed effectively off of his back foot throughout the third round. Hernandez pressured him in that round, but rarely avoided any of the punches Delgado threw at him.

Hernandez’s left hook caught Delgado with about 20 seconds remaining in the second round.

Delgado countered Hernandez with a left hook when there were about 25 seconds to go in the opening round. Hernandez landed two right hands to back up Delgado after the midway mark of the first round.

Keith Idec is a senior writer/columnist for BoxingScene.com. He can be reached on Twitter @Idecboxing.