In the past three seasons, only 10 undrafted free agents logged five or more starts as rookies, half of them in 2010. Because of the lockout - the likelihood that franchises won't even be able to sign undrafted players until July and that those first-year guys won't have the benefit of minicamps and OTAs to make an impression - the figure is likely to be further reduced in 2011.

But players traditionally make their most significant career leap in the second year of their league tenures, so there should be a few undrafted free agents from the 2010 class who advance into meaningful roles this season. Four undrafted players - Green Bay linebacker Frank Zombo (eight), Tampa Bay running back LeGarrette Blount (seven), Dallas fullback Chris Gronkowski (seven) and Packers cornerback Sam Shields (six) - made more than five starts as rookies in 2010.

A year ago, I predicted five undrafted free agents from 2009 who started fewer than five games in their debut season, but were likely to produce improved results in '10, and the results weren't bad.

Four of the five started at least two games as sophomores. Arian Foster of Houston led the NFL in rushing. Pittsburgh's Ramon Foster became the No. 1 right guard for the Steelers and started in the final eight regular-season games and in three playoff contests, including Super Bowl XLV. Were it not for an injury, Jonathan Casillas of New Orleans might have been the club's fulltime starter at strongside linebacker.

And so, we decided to take another shot at identifying a few members of the 2010 undrafted free agent class - all of whom started fewer than five games as rookies - who might make impacts in '11. Although they started only four games each, we did not include Saints tailback Chris Ivory or Indianapolis wide receiver Blair White because of the outstanding contributions they made as rookies.

Here's the list:

*CB Aaron Berry, Detroit (1 game, 1 start in 2010): Despite being undrafted, the former University of Pittsburgh standout started the opening game at Chicago for the Lions last year, but suffered a season-ending shoulder injury in the contest. Before the injury, Berry had three tackles, an interception and a pass defensed. He doesn't run fast, but plays good positional defense, and is a better "ball athlete" than his speed would indicate. Might be best suited to nickel cornerback on a Detroit defense that has improved but still needs help in the secondary.