In 2015, Dlagnev won the United States World Team Trials but was unable to compete at the 2015 World Wrestling Championships and was replaced by Zach Rey, who was runner-up at the trials. Dlagnev also won the 2016 US Olympic Team Trials in 2016 and represented the United States at the 2016 Olympics in Brazil, where he reached the semi-finals, but again missed out on a medal after losing to Geno Petriashvili in his bronze medal bout.