Well,

At least it's possible on this list anyway:

http://sports.espn.go.com/nfl/alltime/leaders?cat=passyards

I knew KC was an old fart for an NFL QB, but I didn't realize how far up this list he was.  14th in passing yards all time.  A couple of good seasons, heck one outstanding season, and he'll pass up Joe.  Argh!  Look who's at number 1!!  Make him go away!  'course that guy is probably #1 on the all time interceptions list.

I'm surprised that Testaverde is shown as inactive on this list.  I figured he was still playing for somebody ;-).