Dolphins RB Knowshon Moreno is going to undergo arthroscopic surgery on his left knee.
He'll be out four to five weeks. That means he could miss the start of training camp and possibly the first preseason game or two.
This is a setback for Moreno who showed up to camp out of shape and will have trouble getting into football shape while he's rehabbing knee surgery. Lamar Miller looks like the RB1, at least to start the season. He's capable of fantasy RB2 numbers if the team shows faith in him. Last year, he didn't get consistent touches, but there is a new offensive coordinator (Bill Lazor, formerly of Philadelphia) and Miller might be a (very) poor man's LeSean McCoy.