Kiper downgrades Cardinals' 2013 draft

TEMPE, Ariz. -- It’s not surprising that ESPN’s NFL draft guru Mel Kiper Jr., dropped the Arizona Cardinals' 2013 draft grade when he re-evaluated them on Thursday.

Kiper initially gave the Cardinals a B for their 2013 draft class, but nine months later, it dropped to a B-.

You can read why hereInsider, but it’s an ESPN Insider story, so don’t forget to sign up.

Arizona’s draft class was decimated by injuries last season. The Cards lost first-round pick Jonathan Cooper for the year during the preseason, third-round pick Tyrann Mathieu's season ended in Week 13 and fourth-round pick Alex Okafor went down in Week 3. Before any of that happened, sixth-round pick Ryan Swope suffered a career-ending concussion during OTAs and minicamp.