http://sports.espn.go.com/espn/page2/story?page=easterbrook/071127
For the game, New England coaches called 60 passes (attempts plus sacks and scrambles) versus 13 rushes. Why do the Patriots pass so much? It's not because the team cannot run; New England is seventh in the league in rushing yards per game (11th in yards per carry). Bill Belichick might simply figure that because passing plays gain on average more than rushing plays, might as well pass. On Sunday night, New England averaged 6.3 yards per called pass, 2.5 yards per rush; for the season, the only undefeated team is averaging 8.7 yards per pass attempt and 4.1 yards per rush. Belichick might reason: If my average pass gains twice as much as my average rush, why not call pass after pass after pass? Of course, you need a magnificent offensive line for this strategy.