Ravens cornerback Jimmy Smith undergoes groin surgery

Coach John Harbaugh's concern about cornerback Jimmy Smith was evident after Sunday's game, when he revealed the former first-round pick couldn't get his groin loose enough to play.

Those worries appear to be founded, as the Ravens have announced Smith underwent groin surgery in Philadelphia on Thursday. The procedure was successful and Smith is expected to return before the end of the season.

So with Lardarius Webb out for the year following knee surgery, the secondary will be without two of its top three corners for the foreseeable future.

Smith, 24, has appeared in eight games, starting two, making 27 tackles and defending three passes.

Earlier this week, the team signed veteran cornerback Chris Johnson. But on Wednesday, Harbaugh downplayed the move as an indication that Smith's injury was significant.

"You can't have enough corners. We all know that. And Jimmy's got the groin issue," Harbaugh said. "We are going to have to take that day by day and just see where we are at, but it helps to have Chris Johnson here.

"He had a great workout (Tuesday), looked really good. A great guy - a guy we've always respected as a player. We're very excited to have him on board."

And now with Smith out, the Ravens will certainly need him alongside Cary Williams, Corey Graham and Chykie Brown.