Hard punching Puerto Rican junior welterweight Subriel Matias (15-0, 15 KO's) returned to the ring and continued his streak of knockout victories.

Matias broke down and stopped Argentine boxer Jonathan José Eniz (24-13-1, 9 KO's) in the fifth round of their main event, at the Tomás Dones Coliseum in Fajardo.

The fight marked the first time that Matias stepped inside the ring after stopping Russia's Maxim Dadashev on July 19 in their International Boxing Federation (IBF) final world title eliminator.

A few days after that fight, which was held in Maryland, Dadashev died as a result of the injuries he suffered on the ring.

There was some fear that Matias would be mentally damaged in the aftermath of the Dadashev tragedy.

But the dangerous banger did not seem to hold back his arsenal, as he dug in hard shots on his opponent.

Matias is waiting to hear from the IBF, regarding a potential mandatory crack at Josh Taylor, who unified the IBF, WBA world titles with a recent victory over Regis Prograis.

In other results, over in La Paz in Mexico, former Mexican Olympian Joselito Velázquez was taken to the limit to keep his undefeated record intact by unanimous decision over the solid fighter Adrián Curiel in the main event.

Velázquez (12-0, 9 KOs), with Hall of Fame trainer Freddie Roach in his corner, had to draw on all of his repertoire and talent, both offensively and defensively, to impose his authority to go ten hard rounds against Curiel (15-3, 3 KO’s).

Curiel was always a menace in the fight and his style made things tough, although Velázquez began to figure him out in the later rounds.

All three judges saw it for Velázquez, with a 97-93 card and two scores of 95-94.

Also on the card, Carlos "Chinito" Ornelas (25-2, 14 KO's) got a well-deserved and well-worked victory by unanimous decision over the solid and complicated Tijuana boxer José Alberto "As Negro" Guzmán (21-3-3, 10 KO's), in an eight round fight that had fans on the edge of their seats.