Jeff Tedford plans to 'alternate' running backs this season for the Tampa Bay Buccaneers.

Doug Martin had 1,454 yards rushing in 2012, but was injured in 2013.

"I think you have to alternate," Tedford said, via the Tampa Bay Times. "Even when we had two, 1,000-yard rushers [at California], J.J. Arrington was a 2,000-yard rusher and and we had a couple times guys had a thousand yards apiece. But I don't believe that one back can carry the load. It's just too physical. I think you probably need to have two to three guys to bring different things to the table."

Bobby Rainey and Mike James will share carries with Martin, along with 2014 third round pick Charlie Sims.

"I think you at least need to have two to be able to spell them here and there and keep them healthy and that type of thing," Tedford said. "That's the goal to try and create some depth right there where there's not a dropoff when one guy comes in and another guy goes out. There's no dropoff. We just keep going."