Former Alabama Crimson Tide running back Trent Richardson will not take part in on-field drills at the NFL Combine this upcoming weekend after undergoing minor knee surgery.

Richardson's agent sent a memo to all 32 teams giving them the news of this procedure. Now, someone close to Richardson said it was "No big deal at all".  But isnt it?

Not performing at the Combine could be a setback for Richardson and his draft stock. Can he participate in Alabama's Pro Day on March 7th?  Reports are that he may not do any on-the-field work until later in March.

Think about running backs with knee injuries that never came back to their full potential? Arian Foster injured his knee at Tennessee and it SEVERELY lowered his draft stock.  In fact, he went undrafted.

Apparently, Richardson injured his knee in a practice leading up to a blowout win versus LSU in the BCS National Championship.

Now, we all know that he is a good running back and can be a top 10 pick, but can not participating in his Pro Day or the Combine hurt his draft stock? Maybe, Maybe not.

But I'm sure no matter what, someone will take a chance at this work horse at running back in the upcoming draft.