The injury was a tough one for the Cardinals. They are rebuilding their long-neglected offensive line around Cooper, the seventh overall pick in the draft. Injuries sidelined multiple starters on the line last season, including left tackle Levi Brown and center Lyle Sendlein. Losing Cooper before he plays a regular-season game reduces the margin for error even though overall line depth is improved.
There is hope for Cooper. Other highly drafted offensive linemen have bounced back from injury-shortened rookie seasons in recent years. Russell Okung, taken sixth overall by the Seattle Seahawks in 2010, rebounded to earn Pro Bowl honors in his third season. Cincinnati's Andre Smith and Atlanta's Sam Baker have been more durable lately after rough early stretches.
The chart below ranks first-round offensive linemen from 2008 through 2012 by most games missed as rookies.
Chris McIntosh, Steve Hutchinson, James Carpenter, Okung and Jason Smith are five first-round offensive linemen from NFC West teams to miss time early in their careers since the NFL realigned into eight four-team divisions for the 2002 season. All but Hutchinson suffered significant injuries as a rookie. Hutchinson suffered a broken leg four games into his second season.