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Touchdown passes and passer rating are hardly the only records that Manning is on pace to break in 2013.
Two seasons ago, Drew Brees of the New Orleans Saints broke Dan Marino's long-standing record for single-season passing yardage, throwing for 5,476 yards.
Brees is actually on a pace that would better that mark slightly this year. The 13th-year veteran's 1,722 yards through five games extrapolates to 5,510 over 16.
Where Brees is set to squeak past his own record, Manning is on a pace that would truly make history.
At Manning's current clip, he would pass for 6,028 yards in 2013, becoming the first player in NFL history to cross the 6,000-yard barrier.
It's not going to be easy. Seven of Denver's last 11 games are against teams that rank in the top 10 in the NFL in pass defense. Three of those games are against teams allowing fewer than 200 yards per game through the air.
Denver's final 11 opponents (the Jacksonville Jaguars, Indianapolis Colts, Washington Redskins, San Diego Chargers twice, Kansas City Chiefs twice, New England Patriots, Tennessee Titans, Houston Texans and Oakland Raiders) average 231 passing yards allowed per game.
That average would leave Manning with 4,425 yards, a fine season but well short of the record.
However, Manning is no average quarterback, so let's split the difference between that 231 yards and the 376 yards that Manning is averaging.
That's 303.5 yards per game, or 3,338 yards the rest of the way. Add the 1,884 yards that Manning already has, and we're left with 5,222 yards.
In other words, the record is well within Manning's grasp.
Don't sleep on Brees either. He's the only man to throw for more than 5,000 yards more than once, he plays his home games indoors, and the Saints have been known to throw the ball occasionally.