The Bears replaced injured long snapper Patrick Scales by signing Jeff Overbaugh on Monday after a morning tryout at Halas Hall.

Overbaugh, in his second season from San Diego State, was selected over Jimmy Landes, a sixth-round draft pick of the Lions in 2016, after the workout. The Bears have used three long snappers since longtime mainstay Pat Mannelly retired after the 2013 season — Jeremy Cain, Thomas Gafford and Scales.

Overbaugh has yet to appear in an NFL regular-season game and will have an opportunity to showcase himself when the Bears return to the practice field Tuesday and conclude the preseason Thursday night against the Browns at Soldier Field.

Scales was lost to a “serious” right knee injury during the second quarter of Sunday’s exhibition victory at Nashvile. He left Nissan Stadium using crutches and with a brace on his right leg, and an MRI Monday revealed he suffered a torn ACL in his right knee.

Overbaugh was with the Broncos earlier this offseason and was in training camp with the Rams last summer.

It is possible the Bears will consider other options after teams reduce from 90 players to 53 on Saturday. If Overbaugh performs well, he can take a big step toward securing the job. Scales was waived/injury meaning he will revert to the team’s injured reserve list when he clears waivers.

bmbiggs@chicagotribune.com

Twitter @BradBiggs