Koehn attended the University of Iowa from 2012–2015. After a collegiate career in which he made 28 of 36 field goals, he finished with a field goal percentage of 77.8%.[1] He helped Iowa beat Pittsburgh 27–24 by kicking a 57-yard field goal as time expired on September 19, 2015.[2]
Professional career
Miami Dolphins
In May 2016, the Miami Dolphins signed Koehn as an undrafted free agent.[3] On August 27, 2016, he was waived by the Dolphins.[4]
Minnesota Vikings
On January 3, 2017, the Minnesota Vikings signed Koehn.[5] On September 2, 2017, he was waived by the Vikings.[6]
Cincinnati Bengals
On November 4, 2017, Koehn signed with the Cincinnati Bengals after an injury to Randy Bullock.[7] The next day, he kicked an extra point in the second quarter of a 23-7 loss to the Jacksonville Jaguars. He was released on November 11, 2017 after Bullock was deemed healthy.[8]
New York Giants
On January 1, 2018, Koehn signed a reserve/future contract with the New York Giants.[9] He was waived on September 1, 2018.[10] He was re-signed to the practice squad on October 9, 2018, only to be released three days later.[11][12] He was re-signed to the practice squad on November 23, 2018, but was released three days later.[13]