Blankenship missed two field goals and an extra point in the overtime loss to the Ravens.
Badgley has made 52 of 66 career field goals and 83 of 88 extra points. He missed a 46-yarder and went 1-for-2 on PATs in the season opener with the Titans, who cut him a day later.
Badgley signed with the Colts as an undrafted free agent in 2018 before ending up with the Chargers, where he spent three seasons.
Tristan Vizcaino beat out Badgley for the Chargers’ kicking job in August.