4 Underrated San Francisco 49ers Ready to Step Up in 2011

With only one final preseason game left, the final roster for the San Francisco 49ers is slowly falling into place. With only 53 roster spots up for grabs, most of the players who will make the final team will be established names on the squad.

However, there are a few 49ers who could make some waves in 2011. 

Here are four little known San Francisco 49ers ready to make the step up this coming season.

FB Bruce Miller

Rookie Bruce Miller, who played defensive end while in college, has come along in a major way this preseason after getting drafted in the seventh round of this year's draft. 

For a team that hasn't seen the explosive fullback play since the days of Fred Beasley, Miller could be a real bright spot. He showed some of his potential last week, placing a big block to spring open fellow rookie Kendall Hunter for a long touchdown run.

His speedy rise will surely spell the exit for veteran fullback Moran Norris.

LB NaVorro Bowman

The main replacement for veteran Takeo Spikes, who left in free agency for the San Diego Chargers, linebacker Navarro Bowman will have a chance to shine in his second year with the Niners.

He has been pegged as a quick learner, and drew comparisons to all-world linebacker Patrick Willis as a rookie from coaches.

Paired with Willis, Bowman could be a pleasant surprise for the defense that will look to blitz more under new coordinator Vic Fangio.

WR Joshua Morgan

Joshua Morgan has a unique opportunity to see his numbers go up, even as the team will move him to the third wide receiver position.

His situation could be compared with the 2008 season of Arizona Cardinals wide receiver Steve Breaston. Playing behind the talented Larry Fitzgerald and Anquan Boldin, Breaston was a frequent recipient of single coverage while defenses scramble to cover his fellow wideouts. 

Similarly, Morgan could see less attention as teams put attention on Michael Crabtree and newly-acquired Braylon Edwards.

S Madieu Williams

In an injury-depelted secondary, safety Madieu Williams could find a way to make an early impact.

His play against the Houston Texans, which included a forced fumble, was one of the few highlights for the Niners Saturday (even though he was beat for a touchdown by tight end Owen Daniels in this picture). He also had an interception against the Oakland Raiders.

Williams has earned praise for his preseason efforts from Coach Jim Harbaugh, who said Williams is still in contention for a starter spot.

While Williams' injury history is some reason for concern, his play early is plenty of reason for some optimism in his success in San Francisco.