METAIRIE, La. (AP) -- Saints reserve cornerback Patrick Robinson will miss the rest of the season with a right knee injury, and his spot on the roster has been filled by the re-signing of veteran defensive back Chris Carr, coach Sean Payton said Wednesday.
Robinson, a 2010 first-round draft choice, injured his patella tendon during the third quarter of New Orleans' 16-14 victory at Tampa Bay last Sunday.
Robinson was a starter last season, but this season was moved to a backup role, in part because of the arrival of free agent Keenan Lewis. Robinson also was rehabilitating from offseason arthroscopic knee surgery when the preseason began, which prevented him from practicing during the first week of training camp. Last season, Robinson intercepted three passes, returning one for a touchdown.
Saints safety Malcolm Jenkins said that Robinson's injury cost the Saints a defensive back who is ''very instinctive.''
''There's stuff that he does that you really can't coach,'' Jenkins said. ''He was starting to get healthy and he was looking really good. We were trying to ease him into the lineup. But losing him, obviously you lose some quality depth.''
Carr, who practiced Wednesday as New Orleans prepared for Sunday's home game against Arizona, had been with the Saints during training camp and was among the club's final cuts.
He is a nine-year veteran who has played with Oakland, Tennessee, Baltimore and San Diego. His time in Oakland overlapped with that of current Saints defensive coordinator Rob Ryan, who formerly held the same post with the Raiders.
Carr is one of three reserve cornerbacks, along with second-year pro Corey White and rookie Rod Sweating.
Jenkins and fellow safety Kenny Vaccaro also have been deployed to cover slot receivers in defensive sets featuring five or six defensive backs instead of the usual four.