Alonso started his professional football career in 2003 with
Huracan, after which he would later move on to play for eight other clubs, while also going on loan to
Deportes Concepción. After a brief stint with , Alonso won the
Primera B Metropolitana with
Almirante Brown in 2020 and that was his only career trophy throughout his 22 years playing years according to his career stats on Soccer way. Alonso retired at the end of 2022. ==Coaching career==