File - In this photo from Jan. 14, 2012, San Francisco 49ers quarterback Alex Smith (11) runs behind offensive tackle Joe Staley (74) to score on a 28-yard touchdown run during the fourth quarter of an NFL divisional playoff football game against the New Orleans Saints in San Francisco.
File - In this photo from Jan. 14, 2012, San Francisco 49ers quarterback Alex Smith (11) runs behind offensive tackle Joe Staley (74) to score on a 28-yard touchdown run during the fourth quarter of an NFL divisional playoff football game against the New Orleans Saints in San Francisco. Jeff Chiu AP
File - In this photo from Jan. 14, 2012, San Francisco 49ers quarterback Alex Smith (11) runs behind offensive tackle Joe Staley (74) to score on a 28-yard touchdown run during the fourth quarter of an NFL divisional playoff football game against the New Orleans Saints in San Francisco. Jeff Chiu AP