Nickel Package: Super Bowl sleepers

Updated: January 30, 2013, 4:04 PM ET
By Todd McShay

The Baltimore Ravens and San Francisco 49ers have done a great job building their rosters through the draft, and much has been made recently of the 49ers' 2007 draft class that netted starters Patrick Willis, Joe Staley and Dashon Goldson in the first four rounds.

However, both the Ravens and Niners are among the teams that diligently mine the later rounds and rookie free-agent pool for contributors.

According to draftmetrics.com, 32.1 percent of games started in the NFL were by players drafted in Rounds 5-7 or signed as rookie free agents, and both of this year's Super Bowl teams have at least five key contributors who come from that group. And the lists below do not include players on injured reserve who made significant contributions this season, like Ravens ILB Jameel McClain.