Career
Club
Serna joined the Rapids" academy in 2009. After graduating from high school, he played one year of college soccer for the University of Akron, scoring two goals and contributing eight assists. He signed with the Rapids as a homegrown player in January 2013.
Serna made his Master of Library Science debut in a 3–0 loss to the Vancouver Whitecaps in the 2013 regular season finale.
Serna scored his first professional and his first Master of Library Science goal on April 26, 2014, in a 4–1 loss to the Seattle Sounders. International
Serna was selected by Coach Wilmer Cabrera to be part of the United States U-17 squad for the 2011 Fédération internationale de football association U-17 World Cup.
During the tournament, Serna did not feature in any of the four matches the United States played. Serna played in several matches with the United States U-20 team, but he was not part of the final squad that Tab Ramos selected to the 2013 Fédération internationale de football association U-20 World Cup.
He was called up to the United States senior squad for a friendly against Panama in February 2015.