IRVING, Texas -- Day 4 of reviewing the Dallas Cowboys' past five drafts continues today with the Class of 2012.

If you want our thoughts on the 2009-11 drafts, click here for 2009, here for 2010 and here for 2011.

First-round pick: Morris Claiborne (No. 6 overall)

Number of picks: 7

How they did: The Cowboys made a bold move by trading up from No. 14 to No. 6 to take Claiborne, whom they had given the highest grade for a cornerback since Deion Sanders. Two years later, the Cowboys are still waiting for Claiborne to pay off.

In fact, most of the draft class has yet to pay off. Third-round pick Tyrone Crawford (No. 81 overall) did not play last season because of a torn Achiiles. One fourth-round pick, Matt Johnson (No. 135 overall) has yet to play in a game in his two seasons because of injuries. It took the other fourth rounder, Kyle Wilber (No. 113 overall), almost two seasons to find his role. Danny Coale (knee, foot) and Caleb McSurdy (Achilles) never made the team. Sixth-round pick James Hanna was the No. 2 tight end a year ago.

Pivotal pick: It’s hard to say anybody other than Claiborne because of the price the Cowboys paid to get him, giving up their second-round pick. He came in with a surgically-repaired wrist that kept him out of offseason work as a rookie. He suffered through a hamstring injury that kept him out of six games last season. He has two interceptions in two seasons and has not displayed the confidence he played with at LSU. He must turn it around in 2014 or the Cowboys’ decision to move up to get him will haunt the team for a long time.

Best pick: There isn’t one yet really. Crawford did not record a sack as a rookie but was solid. The Cowboys are banking on him in a big way to return from the Achilles’ injury. Based on expectations and playing time, Hanna (No. 186 overall) might be the best, but he has just 20 catches for 159 yards. He could see his playing time decrease in a big way if Gavin Escobar gets more work as the club intends.

Worst pick: The Cowboys have kept Johnson around because of his potential, but the patience has to be running thin. He did not play as a rookie because of recurring hamstring injuries, as well as an aching back. He did not play in 2013 because of ankle surgery. He is out of time to make something happen, which he knows. Considering the Cowboys’ need at safety, however, there is still a chance for Johnson to make an impact.