Career
Born in Ciudad Juárez, Mexico, Mendiola joined the Los Angeles Galaxy Academy in 2011. On February 20, 2014 it was announced that Mendiola was signed as a homegrown player by the Galaxy. He then made his professional debut with the Los Angeles Galaxy II, the reserve side of the Los Angeles Galaxy, on March 22, 2014 in the sides first ever USL Pro match against the Orange County Blues.
His first appearance with the Los Angeles Galaxy first team came on May 17, 2014 in a regular season Master of Library Science match against the Houston Dynamo.