The Bucs signed Josh McCown last month, and new coach Lovie Smith indicated McCown was signed to be the team's starting quarterback. But last year's rookie starter Mike Glennon doesn't believe that's cast in stone, and it makes sense to think he will in fact get the chance to beat out McCown.

"Lovie said to me and to the team the best players are going to play," Glennon told the Tampa Bay Times. "And I don't think that's any different for the quarterback position."

It's worth noting that before compiling a quarterback rating of 109.0 in eight games for the Marc Trestman-coached Chicago Bears last year, McCown had struggled to a sub-75.0 quarterback rating in each of his previous NFL seasons. From 2008-2012, he started only 2 games -- for the Bears, coached at the time by Smith. He threw 4 interceptions and took 7 sacks in those games.

Should anyone really assume he'll beat out Glennon in the preseason just because of last year's success working with Trestman?

In contrast, Glennon's rookie season was one of the better ones by a rookie quarterback in the last 10 years. Only six have posted higher quarterback ratings in their rookie seasons than he has.

A table Ian Allan recently compiled showing the highest-rated rookie quarterbacks over the last decade is presented below.

HIGHEST RATED ROOKIE QUARTERBACKS
YearPctTDIntRate
2012Robert Griffin III65.6%205102.4
2012Russell Wilson64.1%2610100.0
2004Ben Roethlisberger66.4%171198.1
2006Jay Cutler59.1%9588.5
2008Matt Ryan61.1%161187.7
2011Cam Newton60.0%211784.5
2013Mike Glennon59.4%19983.9
2012Nick Foles63.1%6582.1
2011Andy Dalton58.1%201380.4
2008Joe Flacco60.0%141280.3
2013EJ Manuel58.8%11977.7
2012Andrew Luck54.1%231876.5
2010Sam Bradford60.0%181576.5
2012Ryan Tannehill58.3%121376.1
2010Colt McCoy60.8%6974.5
2006Matt Leinart56.8%111274.0
2012Brandon Weeden57.4%141772.6
2007Trent Edwards56.1%7870.4
2005Charlie Frye59.8%4670.2
2011Christian Ponder54.3%131370.1
2006Vince Young51.5%121366.7
2013Geno Smith55.8%122166.5
2011Blaine Gabbert50.8%121165.4
2009Mark Sanchez53.8%122063.0
2009Matthew Stafford53.3%132061.0
2009Josh Freeman54.5%101859.8
2010Jimmy Clausen52.5%3958.4
2004Eli Manning48.2%6955.4
2007John Beck56.1%1650.3
2005Alex Smith50.9%11140.8

--Andy Richardson