There's a question among some Seahawks observers as to who should be the team's starting offensive guards.
"I think it's a competition to see which guy is the best," Cable said. "Is it James? Is it J.R.? What a cool thing for our football team."
Sweezy, a defensive tackle in college, shared time with John Moffitt as a rookie in 2012 then became the full-time starter after winning a training-camp competition last summer. Pass protection has been a common criticism of his game.
"J.R. ... played so well last year," Cable said. "I've heard, read things where people questioned that and that's foolish if you know football. He may be one of the best young guards in the game and he'll probably prove that this year and then move forward from there."
Carpenter, meanwhile, is finally healthy. Behind him are the knee injuries that have plagued him to varying degrees in each of his first three seasons. He's in noticeably better shape, too. That has led to an increase on confidence, according to Cable.
"He's really playing at a much different level and pace than he's played with thus far," Cable said.
Follow Brady Henderson on Twitter @BradyHenderson.