The Ravens have improved their backup quarterback situation, signing veteran Thaddeus Lewis and waiving Dustin Vaughn.
Lewis will step in as the team’s No. 3 quarterback and No. 2 right now. With Joe Flacco (back) still out of practice, Ryan Mallett has been taking all the first-team reps in training camp and preseason.
Lewis is entering his seventh NFL season. Originally undrafted in 2010 out of Duke, Lewis started five games for the Buffalo Bills in 2013.
That season, he threw for 1,092 yards, tossed four touchdowns and had three interceptions, good for a solid 81.