The Buffalo Bills did the expected Tuesday and signed veteran free-agent quarterback Derek Anderson to mentor rookie starter Josh Allen, but surprisingly they decided to go with three quarterbacks.
To make room for Anderson on their 53-man roster, the Bills released safety Dean Marlowe, meaning they are keeping incumbent backup quarterback Nathan Peterman.
Anderson, 35, is entering his 14th season in the NFL. He spent the previous seven seasons with the Carolina Panthers, with whom he appeared in 25 games and made four starts.
A former Oregon State standout, Anderson entered the NFL in 2005 as a sixth-round draft pick of the Baltimore Ravens. He was with the Cleveland Browns from '05 to 2009, and was with the Arizona Cardinals in 2010.
Anderson was named to the Pro Bowl in 2007 after leading the Browns to a 10-6 finish. He made 15 starts for the Browns that season, completing 298 of 527 passes for 3,787 yards and 29 touchdowns.
The Bills also announced they released tight end Keith Towbridge from their practice squad and filled that spot with cornerback Michael Hunter.