Frevert played in 17 games for the Soul in 2015, converting 124 of 137 extra points and 4 of 8 field goals. He earned First Team All-Arena and AFL Kicker of the Year honors. He had a workout with the New York Jets of the National Football League in November 2015. Frevert played in 15 games in 2016, converting 118 of 129 extra points and 2 of 2 field goals. He garnered First Team All-Arena and AFL Kicker of the Year honors for the second year in a row. In the American Conference Championship Game against the Jacksonville Sharks, he recovered a kickoff off the rebound net, converted seven of seven extra points, and had two successful onside kick attempts. He was then named the AFL Playmaker of the Week for the Conference Championship Round of the playoffs. The Soul also won ArenaBowl XXIX against the Arizona Rattlers by a score of 56–42. In 2012, Frevert graduated from Rockhurst University with a doctorate of physical therapy and now works as a physical therapist.