Mercado, aged 21, started his career on August 2009. Although still relatively close to the start of his career, his record stands at 9 wins and will hopefully continue to rise. The longest win streak that Mercado has ever recorded was between August 2009 and August 2014 when it totaled 9 wins. Mercado's longest KO streak is 1 fights long.
In a memorable debut Mercado gained a KO win against Hector j. Hernandez in a 4 round contest, becoming the 2nd person to stop Hernandez. Mercado's win streak continued to amass with 5 wins against fighters such as Christopher Rivera, Jonathan Cruz and Regino Canales.
Next was Hipolito Rivera on August 28th, 2010 where Mercado took the win continuing his unbeaten streak. Mercado was the 2nd person to go the distance with Rivera. Mercado fought Hipolito Rivera in 2010, the result was via UD. Mercado took on another 2 opponents next, racking up wins against Christopher Rivera and Regino Canales.
On June 22nd, 2013 Mercado fought and beat Bryan Montalvo (0-4-0) to continue his unbeaten streak. Showing his class against Montalvo, Mercado was the 2nd person to go the distance with this opponent. Mercado's wins continued and went from 6 wins to 7 after he then defeated Fauris Capellan.
Next was Angel Pascual on March 22nd, 2014 where Mercado took the win continuing his unbeaten streak. The win against Pascual happened in the 1st round of a 4 round fight via TKO.
Ensuring he remained unbeaten, Alberto Mercado defeated Roberto Rivera on August 30th, 2014 in his most recent fight. Roberto Rivera was Mercado's next opponent of his career with the fight taking place on August 30th, 2014. The fight was scheduled to last for 6 and Mercado was the 3rd person to go the full distance with Rivera and the fight ended in a win for Mercado.