After a one-day tryout with the Earthquakes, was offered a contract, but did not sign, deciding to finish out his high school season.
[citation needed] In 2002, Muñoz was offered a two-year contract deal in Norway from Fredrikstad FC, but chose not to sign.
[citation needed] During his college years he also played for Orange County Blue Star in the USL Premier Development League.
[5] In September 2006 he underwent arthroscopic ankle surgery, which sidelined him for the rest of the season, having appeared in just one game.
[11] Ahead of the 2008 season, he had trials with Chivas, the San Jose Earthquakes, as well as in Puerto Rico and Seattle.
[12] After a short stint with Los Angeles-based amateur team Hollywood United, who he helped qualify for the Lamar Hunt US Open Cup for the first time in 2008,[13] and having played several games for the LA Galaxy's reserves, Munoz was signed to a contract with LA Galaxy on August 1, 2008.
[14] He made his first team debut with the Galaxy on September 6, 2008, coming on as a second-half substitute against Real Salt Lake.
[citation needed] Muñoz returned to his alma mater to become an assistant coach with the UC Berkeley men's soccer team during their fall season of 2007.