The Patriots claimed rookie OG Mark Wetterer off waivers and waived first-year S Ross Ventrone on Wednesday.
Wetterer signed with the Bengals as a rookie free agent on July 26 before being waived on Aug. 8. He was a first-team All-Big East player with Louisville last season.
Ventrone signed with the Patriots in April 2010 as an undrafted rookie. He spent most of the 2010 season on the Patriots' practice squad.