Phillip Rivers with 4,710 yards.
Peyton Manning
Tom Brady
QB Matt Schaub of the Houston Texans
Through the 2009 season, that is Mike Quick with 1409 receiving yards in 1983. He led the NFL in receiving yards that season.
The leading rusher in the NFL for the 1998 season was Terrell Davis of the Denver Broncos with 2008 yards.
Johnny Unitas
As of the 2008 season, no Cowboys' receiver has led the NFL in pass reception for a season. Two Cowboys' receivers have led the NFL in pass receiving yardage for a season ... Drew Pearson in 1977 (870 yards) and Michael Irvin in 1991 (1,523 yards).
Earl Campbell of the Houston Oilers led the NFL in rushing yards in 1978 (1,450 yards), 1979 (1,697 yards), and 1980 (1,934 yards).
That was Jack Kemp with 21,130 passing yards with the Chargers and Bills.
For the 2007 season, Drew Brees of the New Orleans Saints led the NFL in pass completions with 440. That broke the NFL single season record of 418 set by Rich Gannon of the Oakland Raiders in 2002.
Prior to Shaun Alexander, that was Terrell Davis of the Denver Broncos who led the NFL with 2,008 rushing yards in the 1998 season and played in Super Bowl XXXIII. The only other player to accomplish this is Emmitt Smith of the Dallas Cowboys who did it three times. He led the NFL with 1,773 rushing yards in 1995 and played in Super Bowl XXX, 1,486 yards in 1993 and played in Super Bowl XXVIII, and 1,713 yards in 1992 and played in Super Bowl XXVII.
Click on the 'NFL Scoring Leaders by Season' and 'NFL Touchdown Leaders by Season' links below to see the players that led the NFL in scoring and touchdowns in each NFL season.