Jake Paul continued his unique boxing career with a first-round knockout over Ryan Bourland on Saturday at the Coliseo Jose Miguel Agrelot in San Juan, Puerto Rico.

Paul (9-1, 6 KOs) worked behind a solid, stiff jab, switching from head to bread basket with regularity, and also digging a right hand to Bourland’s flank. He was already looking comfortable and in control when a booming right hand caught Bourland (17-3, 6 KOs) on the temple and wobbled him.

Bourland sagged into the ropes before escaping and scurrying across the ring, Paul in pursuit. Bourland attempted to slide off the ropes and out of harm’s way, but Paul showed good punch variety, catching Bourland with an uppercut and another right hand, pinning him in the corner and opening up with a flurry of punches. Referee Luis Pabon stepped in to stop the contest as Bourland fell to his hands and knees. Official time of the stoppage was 2:37.

Afterward, Paul reiterated that his intention was to continue testing himself against professional boxers after a career that, to this point, has been mostly against MMA fighters and influencers – although his attempt to goad Saul "Canelo" Alvarez to face him in the ring is highly unlikely to prove successful.

The bout, which was intended to be the chief support to Amanda Serrano’s featherweight championship defense, became the de facto main event when Serrano was forced to withdraw at the last minute due to an eye injury.