Kirk Morrison, LB, Raiders -- An unheralded player out of San Diego State, Morrison was pressed into immediate action as a rookie for a team weak at linebacker. He quickly made it into a strength, recording 91 tackles in his first season. Last year, he followed that performance up with 101 tackles, a sack, two interceptions, a fumble forced and a defensive touchdown on a fumble recovery. There's no reason not to expect even more in 2007.
Nnamdi Asomugha, CB, Raiders -- It's hard to ignore eight interceptions, but Pro Bowl voters did just that last year in not awarding Asomugha a trip to Hawaii. The young athlete has gotten better every season since he entered the league in 2003, and among many scouts and coaches he's now regarded as one of the best cornerbacks in the NFL.
Justin Smiley, G, 49ers -- Last year, the 49ers improved their rushing average by 20 yards (135.8 from 105.6) and their yards per carry by a whole yard (4.9 from 3.9). Obviously, the addition of Larry Allen was a big factor in that, but equally important was the continued development of Smiley, a third-year player who really played well despite having to fight through injuries. If healthy, he could be even better.
Kris Dielman, G, Chargers -- The Chargers wisely came through with a big contract for Dielman this offseason, keeping one of the cornerstones of their offensive line in town for the foreseeable future. Fans will be certain to hear more of his name in the coming seasons.