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Kevin Trapp played in two Bundesliga seasons with 1. FC Kaiserslautern, a German football club based in Kaiserslautern, Rhineland-Palatinate. Trapp joined the club's youth academy in 2005 and made his professional debut for the club in 2012. He went on to make a total of 57 appearances for the club in the Bundesliga, before joining Eintracht Frankfurt in 2015.