With kicker Randy Bullock questionable due to a back injury, the Cincinnati Bengals on Saturday signed free-agent kicker Marshall Koehn and waived safety Derron Smith.
Koehn signed with Miami as an undrafted college free agent out of Iowa in 2016 and appeared in three preseason games before being waived. He was with Minnesota for the 2017 preseason and played in all four preseason games, making 2 of 3 field goals and 5 of 6 extra points.
The Vikings waived Koehn on Sept. 2.
Bullock reported tightness in his back earlier this week. He did not practice Wednesday and did a limited amount of kicking Thursday. Bullock, who is 8 of 10 on field goals this year and x of x on extra points, did not kick Friday.
Koehn will serve as an insurance policy in case Bullock isn’t ready to play after going through pregame warmups Sunday in Jacksonville.
Smith was a Bengals sixth-round draft pick out of Fresno State in 2015. He appeared in 31 games, including three in 2017 with one special teams tackle.