Coming out of UM, Joseph was not expected to contribute immediately for San Diego. While he had long arms and a large physique at 6 feet 6 inches (1.98 m) and 345 pounds (156 kg), he needed work on his technique and reliability.[6] The Chargers signed him to a three-year contract.[7] Joseph was among San Diego's final round of cuts in the preseason,[8] but he was signed the following day to their practice squad for 2004.[9] He was cut the following preseason before their final exhibition game in 2005.[10]
^"Chargers' Day 2 picks". The San Diego Union-Tribune. April 26, 2004. p. E-12. Has excellent physical tools -- long arms, big frame -- but his lack of technique and consistency are issues. He's not expected to contribute immediately because he needs polishing.
^Trotter, Jim (July 27, 2004). "QB watch continues". The San Diego Union-Tribune. p. D-1. Offensive lineman Carlos Joseph (seventh round) and tight end Ryan Krause (sixth round) each signed three-year deals, the team announced.
^Trotter, Jim (September 6, 2004). "Chargers' (non) cuts a surprise". The San Diego Union-Tribune. p. C-1. The following players were released: offensive linemen Phil Bogle, Chad Ward, Reese Hicks and Carlos Joseph; tight end Brock Edwards; wideouts Dyson and Malcom Floyd; safeties Robb Butler and Jerton Evans; cornerbacks Jonathan Cox and Jerrell Pippens; linebackers Howard Hodges and Justin Riley; defensive end Otis Leverette; and Lassiter.
^Trotter, Jim (September 7, 2004). "Brees gets the QB call". The San Diego Union-Tribune. p. D-1. Seven players were signed to the practice squad: safety Robb Butler, cornerbacks Jonathan Cox and Jerrell Pippens, tight end Brock Edwards, wideout Malcom Floyd, offensive tackle Carlos Joseph and defensive end Robert Pollard.
^Acee, Kevin (August 29, 2005). "Merriman insists he won't miss Dallas game". The San Diego Union-Tribune. p. E-1. Also cut were punter Brian Claybourn, cornerback Abraham Elimimian, running backs Derek Farmer and Lydell Ross, offensive tackle Carlos Joseph, safety Jason Leach, wide receivers Rob Milanese and Willie Quinnie, quarterback Craig Ochs and linebacker Frank Strong... Thursday's exhibition finale appears headed for tape delay locally.