Starting his career aged 18, Barrios's record stands at 6 wins and the unbeaten streak will hopefully continue on. Barrios's longest KO streak is 2 fights long out of his 6 pro career fights.
Getting rid of his debut fight nerves early, Barrios took on Rigoberto Moreno in November 2013 and claimed a stoppage victory (round 1, TKO). Barrios was the first person to have ever stopped Moreno. Barrios went on to win his next 3 fights taking his record to 3 wins.
Lyonell Kelly was up next for Barrios on March 7th, 2014. Barrios continued with his winning streak by beating Kelly. In 2014 Barrios fought his next opponent Lyonell Kelly and defeated him via UD. Barrios was the 2nd person to go the distance with Kelly.
Next was Jaxel Marrero on May 10th, 2014 where Barrios took the win continuing his unbeaten streak. In 2014 Barrios fought his next opponent Jaxel Marrero and defeated him via UD. Barrios was the 5th person to go the distance with Marrero.
Salvador Perez was beaten next on July 25th, 2014 meaning Barrios could maintain his unbeaten streak. The 4 round fight ended in the 1st round via KO crowning Barrios as only the 2nd to stop Perez.
Abraham Rubio was beaten by Mario Barrios in Barrios's most recent fight on October 8th, 2014 to ensure his unbeaten run continued. Barrios was the 5th fighter to stop Rubio in round 1 of a 4 round fight, Barrios won via KO.