Juniors In 2001 won the U16 world championship with best friend
Guillermo Hormazábal and Carlos Rios. Aguilar reached as high as No. 14 in the junior world singles rankings in 2002 (and No. 22 in doubles).
Pro tour On 8 March 2010, he made his debut in
Davis Cup singles for disputing the fifth point of the series against
Israel, facing
Harel Levy, defeating him 7–6(7–3), 6–1. One day before his debut in doubles with
Paul Capdeville, falling in five sets to the Israeli couple experienced
Jonathan Erlich and
Andy Ram. In that series 4–1 Chile defeated the team of Israel, thus Chile ranks second round, where they will face the
Czech Republic. On 10 October 2015, Aguilar announced his retirement from professional tennis after his participation in the Future F6 in Santiago de Chile. In his last match, he lost against
Guillermo Rivera Aránguiz in the final, 3–6, 6–4, 5–7. Following his retirement, Aguilar also announced that he would be the head coach of Chilean tennis player
Cristian Garín for the remainder of the 2015 season. ==ATP Challenger & ITF Futures finals==