Rarely do rookie quarterbacks serve as weekly fantasy starters, and the Jets' Mark Sanchez will likely fit that description. 

Peyton Manning is one of the few in the last 10 years who succeeded by throwing for 3,739 yards and 26 touchdowns when he entered the NFL in 1999.

Even Matt Ryan, who was lauded for taking Atlanta to the playoffs, managed to finish with only the league's 13th-most passing yards (3,440 yards) and 16th-most passing scores (16) last year.

Nearly half of the NFL starting quarterbacks scored more fantasy points than Ryan last year. These included Drew Brees, Aaron Rodgers, Philip Rivers, Kurt Warner, Jay Cutler, Peyton Manning, Matt Cassel, Tony Romo, Brett Favre, David Garrard, Chad Pennington, Tyler Thigpen, Eli Manning and Ben Roethlisberger.

Starting just nearly one full season, Sanchez had less college starting experience than Manning or Ryan. He also played with a USC team that was one of the most talented on offense. Rather than facing Pac-10 defenses, he will find himself on a more even playing field facing better competition and players, such as the tough AFC East rivals of New England and Miami.  

Sanchez ranks 30th in my fantasy quarterback rankings.  Sage Rosenfels and Byron Leftwich are ahead of Sanchez, and Tavaris Jackson and rookie Matthew Stafford are below him.