Taking the leap into the pro game, Santiago turned over on December 2012 and has since build up experience against 10 opponents to date. Although not having it all his own way (1 losses), Santiago now looks to improve on his 8 win count after last facing on October 23rd, 2018. Santiago's longest win streak is 4 fights between December 2012 and October 2013. His longest KO streak in his 10 fights is 3 fights long.
Getting rid of his debut fight nerves early, Santiago took on Mario Valdez in December 2012 and claimed a stoppage victory (round 2, TKO). Santiago was the first person to have ever stopped Valdez. Following on from his debut, Santiago continued his career by fighting in a further 5 fights. In this time he fought Jose Lopez, Mario Valdez and Felix Rubio to name just a few, fighting once in 2012 and 4 times in 2013 in this period.
Pushing his career further, Santiago fought Francisco Landeros on September 27th, 2013 adding to his winning record. In 2013 Santiago fought his next opponent Francisco Landeros and defeated him via UD. Santiago was the 2nd person to go the distance with Landeros.
Pushing his career further, Santiago fought Jassiel Escobedo on October 26th, 2013 adding to his winning record. Santiago was the 2nd person to go the distance with Escobedo. Santiago fought Jassiel Escobedo in 2013, the result was via SD.
Santiago went into his next fight against Hector gabriel Flores on December 21st, 2013 with a career record of 7-1-1. Santiago's technical boxing ability was put to the test as he got outpointed in the 6 round fight against the better man. Flores gave Santiago his first professional loss of his 9 fight career to date.
Alejandro Santiago went into his fight with Francisco Landeros on April 5th, 2014 with 7 wins and he added another win to his record taking it to 8 wins by beating Landeros. In 2014 Santiago fought and defeated his next opponent Francisco Landeros. In a successful fight, Santiago was the 3rd person to go the distance with Landeros.