In two games against San Francisco, Adrian Peterson has rushed for just 88 yards on 33 carries.
Normally, stats that are amassed from games in 2007 and 2009 don't mean much for a game in 2012, but San Francisco's rush defense has been consistently stellar since 2007, and one of the big reasons why is defensive line coach Jim Tomsula.
Since his arrival, the 49ers have always seemed to clog up running lanes, and there's no doubt that Tomsula's coaching and scheme contributions have been instrumental in the unit's consistency.
Dating back to the beginning of the 2011 season, the 49ers have allowed just 76 rushing yards per game, easily the best mark in the NFL.
Peterson is so explosive and talented that he may be able to approach the 80-yard mark against the 49ers, but I'd be shocked if he reached the century mark against the best tackling defense in the league.
If the 49ers can take away the big plays from Peterson in the run game, they should be able to make Minnesota one-dimensional, which is the last thing the Vikings want on Sunday.