Subriel Matias KO2 Roberto Ramirez... Former 140-pound title holder Subriel Matias made a successful return in his native Puerto Rico, geting a second-round knockout win over Mexico's Roberto Ramirez (26-4-1). It was the first fight for Matias (21-2 with 21 KOs) since losing his IBF title to Liam Paro in June. A left hook to the body did most of the damage, with Ramirez taking the ten count on one knee.