He put on 20 pounds in a few months, and is now 235 pounds.
"I put (the weight) on pretty quick," Jackson said.
Jackson, who had eight catches as a receiver last year, is like Shannon Sharpe and Jeb Putzier, a couple of former receivers who switched to tight end and had success in Denver.
Jackson's main strength was his size. He was adept at using his body in the passing game, so he won't be bothered by the physical nature of going over the middle for passes.
Jackson also has more of an advantage with his speed at tight end. At wide receiver he couldn't run by many of the cornerbacks in the league, but he can get past most linebackers. Jackson's season ended last year when he suffered a broken ankle, but he said neither the injury or the extra weight has slowed him down.
Jackson will have to get used to blocking at tight end. Denver's receivers are expected to be adept in the running game, but it's much different blocking defensive ends than cornerbacks.
"For me, my technique is not so great right now, so I need to take advantage of this time (the offseason)," Jackson said. "I need to get my head in there."
"I know he will be in the right spot, because obviously he's proved through the years that he's the best ever," Plummer said. "He will learn this system real quick. I'll count on him to be there, but I count on all of my guys to be there, whether it's Jerry Rice or Triandos Luke."
Hunt was drafted as a defensive end in 2003, and had a decent camp as a rookie but didn't make the team or the practice squad. Clabo is the kind of player Denver covets on the offensive line, because he is athletic and can play guard or center.
QUOTE TO NOTE: "The man's good. I'm looking forward to working with him and looking forward to him teaching me a lot about the game." -- Broncos veteran safety John Lynch on Jerry Rice.
STRATEGY AND PERSONNEL
FRANCHISE PLAYER: None.
TRANSITION PLAYER: None.
RESTRICTED FREE AGENTS: None.
EXCLUSIVE RIGHTS FREE AGENTS: None.
PLAYERS RE-SIGNED: S Sam Brandon; OG Cooper Carlisle; DE Marco Coleman; DT Dorsett Davis; DT Luther Elliss; OG Ben Hamilton; TE Patrick Hape; TE/LS Mike Leach; DE Anton Palepoi; DT Monsanto Pope; TE Jeb Putzier; CB Lenny Walls; S Chris Young.
PLAYERS ACQUIRED: TE Stephen Alexander; DE Courtney Brown; LB Keith Burns; OT Anthony Clement; RB Ron Dayne; DE Ebenezer Ekuban; LB Ian Gold; DT Michael Myers; P Todd Sauerbrun; OG Cameron Spikes; DT Gerard Warren.
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