He capture the vacant WBO Oriental super bantamweight title on July 31, 2015 at the 12,000-seater Cuneta Astrodome in Pasay, Philippines against Tanzanian boxer Juma Fundi.

During this first professional bout, he gained his first knockdown, but was able to floor his veteran opponent as well in the early rounds of that fight (Concepcion was 17 years of age at the time).

A year later, he won the WBC youth super bantamweight title by scoring a unanimous decision win over a then undefeated opponent, Joksan "El Torito" Hernandez.

Originally, the fight was supposed to be included in the undercard of the May 2, 2009 bout between Manny Pacquiao and Ricky Hatton but Luevano pulled out due to an injury.

On February 13, 2010, Concepcion faced Puerto Rican Mario “Principe Ponceño” Santiago at the Las Vegas Hilton in Paradise, Nevada.

[1] This win brought Concepcion to a potential fight against Puerto Rican sensation Juan Manuel López.