Yahoo News : Five rookie quarterbacks have not missed a snap in 2

According to official playing-time documents, no quarterback played in 100 percent of his team's offensive snaps during the 2011 season. The closest to achieve that goal was Baltimore Ravens quarterback Joe Flacco, who missed three of the Ravens' 1,080 snaps for a 99.72 percent playing-time percentage. Other quarterbacks who rarely came off the field include Philip Rivers (98.99 percent of the San Diego Chargers' snaps), Cam Newton (98.95 percent of the Carolina Panthers' snaps) and Tom Brady (98.94 percent of the New England Patriots' snaps). We're only three weeks into the 2012 regular season, and this is bound to change as we move forward, but 15 NFL quarterbacks have not missed one of their team's offensive snaps. Some of the names do not come as a surprise. Brady, Rivers, Drew Brees, Ben Roethlisberger and Jay Cutler, while some quarterbacks attempting to shed injury-prone labels — Michael Vick and Sam Bradford — have also managed to take every snap for his team. It is worth noting that during Bradford's rookie season of 2010, he was one of two quarterbacks to take all of his team's snaps. (Peyton Manning, then in his final season with the Indianapolis Colts, was the other.) Perhaps the most impressive aspect of the list is that five of those 15 quarterbacks are rookies Andrew Luck, Robert Griffin, Ryan Tannehill, Brandon Weeden and Russell Wilson. One player who might be in a bit of trouble in keeping his 100 percent playing-time streak alive is Kansas City Chiefs quarterback Matt Cassel, who has accounted for 10 turnovers through four games and while he'll remain the starter , he may soon give way to Brady Quinn. Rounding out the 15 quarterbacks with 100 percent playing-time percentages thus far this season are Christian Ponder of the Minnesota Vikings and Josh Freeman of the Tampa Bay Buccaneers. Rookie Ironmen Including the five rookie quarterbacks, 12 players who entered the NFL in 2012 have not missed one of his team's snaps. Six on the offensive side are offensive linemen Matt Kalil, Kevin Zeitler, Amini Silatolu, Kelechi Osomele, Mitchell Schwartz and Bobby Massie. On the defensive side is Buccaneers first round safety Mark Barron, who is drawing rave reviews for his performance (27 tackles, five passes defensed) this season. Never coming off the field may help a player show up on tape. On the undrafted side, Chargers left tackle Michael Harris had 100 percent playing-time percentages in the first three weeks of the season before giving way to Jared Gaither on Sunday. Through Week 4, Harris' playing-time percentage is at 75.78 percent, the highest among undrafted players on offense. Oakland Raiders wide receiver Rod Streater (61.6 percent) is No. 2 on that list with Jacksonville Jaguars offensive lineman Mike Brewster (57.85 percent), Miami Dolphins fullback Jorvorskie Lane (36.03 percent) and Philadelphia Eagles wide receiver Damaris Johnson (31.05 percent) filling out the Top 5. Cincinnati Bengals linebacker Vontaze Burfict (43.13 percent) leads on the defensive side.

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