NFL.com has Frerotte with 197 career rushes, 1 more than PFR's listed 196 and the difference on PFR is for the 1997 season. PFR has 24 carries, nfl.com has 25.
http://www.nfl.com/players/gusfrerotte/gamelogs?id=FRE682395&season=1997
http://www.nfl.com/teams/washingtonredskins/statistics?season=1997&team=WAS&seasonType=
This would also give the 97 Redskins 454 carries.
When you look at the gamelogs on PFR, they have 25 carries there, but only there does 25 show up.
http://www.pro-football-reference.com/players/F/FrerGu00/gamelog/1997/
I checked the 2008 Vikings media guide and they have 24 carries for Frerotte. I have looked at the Redskins' 2008 and 2010 media guides and they both have 453 carries listed for the team. FO doesn't help since they subtract kneel downs.
It would make the gamelogs match if the carry is added, but I'm not sure why it's changed. As if someone changed it years after the fact and teams never noticed.
- Scott Kacsmar