Career
Sánchez began his professional boxing career on October 4, 1991, knocking out Carlos Figueroa in round one at Mayagüez, Puerto Rico. He went on a European tour in 1994, retaining his title and winning a non-title bout in Spain, and retaining his title in Germany. By then, Sánchez was actively challenging Michael Carbajal into a fight.
That fight, however, never came official
In 1996, he only had one fight, knocking out Jose Luis Velardez in round five. In 1997, he started by suffering his first defeat, at the hands of Edgar Cardenas, by a decision in ten rounds.
Sánchez has been active only on and off since. In 2002, he and Burgos had their second meeting, and this time the result was a draw.
But in 2003, after López had conquered the IBF world belt and retired, the IBF declared Sánchez and Burgos their official challengers for the world crown, and this time, Sánchez lost by a knockout in round 12 at Las Vegas.
Sánchez revealed that he had become a newborn Christian shortly before his next fight, an attempt at recovering the WBO world Strawweight championship, held this time by Ivan Calderón. On December 6, he lost to Calderón by a twelve round unanimous decision at Bayamón. Just over a month later, on September 11, he posted a first round knockout over Arturo Velazquez, at the José Miguel Agrelot coliseum, also in San Juan.
Puerto Rican boxing experts commented that the Sanchez-Dieppa fight should have been considered for "fight of the year" in Puerto Rico.
His next fight, once again for the WBO Junior. Lightweight title that Hugo Cazares had taken from Dieppa, was held in Ponce on August 20 of that year.
After suffering an eye injury, Sanchez lost the fight by an eighth round technical knockout, announcing his retirement from professional boxing immediately after the bout. At a moment in his career Alex Sanchez was trained by Felix Trinidad"s father Felix Trinidad Senior.
Sanchez is now a boxing promoter in Puerto Rico.
He is recognized at Ponce"s Parque de los Ponceños Ilustres in the area of sports.