The Indianapolis Colts have placed veteran running back on the physically unable to perform list to start training camp.
He had a foot injury last season.
Bradshaw rushed for 1,014 yards last season for the New York Giants and should provide a sound complement to starter Vick Ballard once he regains his health. He has rushed for 4,232 career yards and 32 touchdowns with 132 receptions for 1,087 yards and three touchdowns.
Boyett is a hard-hitting former Pac-12 standout who recorded 278 career tackles, 10 interceptions and 30 pass deflections.
Follow me on Twitter: @Ravens Insider
Aaron Wilson covers the Ravens for The Baltimore Sun