A US youth international, Horton has spent the start of his career in Europe. He came back to the United States looking for playing time with DC in 2016 and looks to be a main backup to Bill Hamid in 2017.
iNTERNATIONAL: Named to the USA's Olympic qualifying squad but did not see any action for Andi Herzog's side during the tournament. He started one match in the U-23s' two-game friendly series with Brazil last November, and also played in the prestigious Toulon Tournament in France last spring with United defender Jalen Robinson.
OUTSIDE MLS: Horton signed with Peterborough United in 2013. A year later, he transferred to Welsh side Cardiff City of the Championship.