Alejandro start his career in his city club Rivadavia de Lincoln, when played in the youth categories since 2003 to 2007.

In the tournament, he played in 15 of 18 matches, being an important part of the Berizzo's team in the back with Julio Barroso, Yerson Opazo and Mariano Uglessich.

[1][2] He participated with the club in the 2014 Copa Libertadores where they faced Deportivo Cali, Cerro Porteño and Lanús, being third and being eliminated in the group stage.

[3] In March 2014, he was affected from the first-team because indiscipline with his teammate Fernando Gutiérrez, losing it the rest of the 2014 Copa Libertadores and the 2014 Supercopa de Chile.

[4][5][6] In June 2015, López was released from O'Higgins and was signed to the 2015–16 season by the current Campeonato Nacional Champions Cobresal.