San Francisco 49ers quarterback Alex Smith passes under pressure during the NFL football team's training camp in Santa Clara, Calif., Thursday, Aug. 4, 2011. Smith is back with the 49ers for a final shot under new coach Jim Harbaugh, a scenario even the 2005 No. 1 overall pick himself would have had a tough time envisioning after last season. (AP Photo/Paul Sakuma)

San Francisco 49ers quarterback Alex Smith prepares to pass during NFL football training camp Thursday, Aug. 4, 2011, in Santa Clara, Calif. Smith is back with the 49ers for a final shot under new coach Jim Harbaugh, a scenario even the 2005 No. 1 overall pick himself would have had a tough time envisioning after last season. This was his first practice with the team after signing as a free agent. (AP Photo/Paul Sakuma)

San Francisco 49ers quarterback Alex Smith works out at the NFL football team's training camp in Santa Clara, Calif., Thursday, Aug. 4, 2011. Smith is back with the 49ers for a final shot under new coach Jim Harbaugh, a scenario even the 2005 No. 1 overall pick himself would have had a tough time envisioning after last season. This was his first practice with the team after signing as a free agent. (AP Photo/Paul Sakuma)

San Francisco 49ers quarterback Colin Kaepernick catches the ball during NFL football training camp in Santa Clara, Calif., Thursday, Aug. 4, 2011. (AP Photo/Paul Sakuma)

San Francisco 49ers quarterback Colin Kaepernick pauses at practice during the NFL football team's training camp in Santa Clara, Calif., Thursday, Aug. 4, 2011. (AP Photo/Paul Sakuma)

San Francisco 49ers new kicker David Akers smiles during practice at the NFL football team's training camp in Santa Clara, Calif., Thursday, Aug. 4, 2011. (AP Photo/Paul Sakuma)

San Francisco 49ers wide receiver Braylon Edwards runs a drill during NFL football training camp Thursday, Aug. 4, 2011, in Santa Clara, Calif. (AP Photo/Paul Sakuma)

San Francisco 49ers head coach Jim Harbaugh smiles during NFL football training camp in Santa Clara, Calif., Thursday, Aug. 4, 2011. (AP Photo/Paul Sakuma)

San Francisco 49ers Ronald Johnson makes a catch during NFL football training camp on Saturday, July 30, 2011, in Santa Clara, Calif. (AP Photo/Ben Margot)

San Francisco 49ers Ted Ginn Jr. makes a catch during NFL football training camp on Saturday, July 30, 2011, in Santa Clara, Calif. (AP Photo/Ben Margot)

San Francisco 49ers Lance Long catches a pass during NFL football training camp on Saturday, July 30, 2011, in Santa Clara, Calif. (AP Photo/Ben Margot)

San Francisco 49ers Dontavia Bogan makes a catch during NFL football training camp on Saturday, July 30, 2011, in Santa Clara, Calif. (AP Photo/Ben Margot)

San Francisco 49ers' Aldon Smith performs a drill during NFL football training camp on Saturday, July 30, 2011, in Santa Clara, Calif. (AP Photo/Ben Margot)

San Francisco 49ers' Aldon Smith rests during NFL football training camp Saturday, July 30, 2011, in Santa Clara, Calif. (AP Photo/Ben Margot)

San Francisco 49ers defensive co-ordinator Vic Fangio, left, gestures during NFL football training camp on Saturday, July 30, 2011, in Santa Clara, Calif. (AP Photo/Ben Margot)

From left to right, San Francisco 49ers quarterbacks McLeod Bethel-Thompson and Alex Smith and coach Jim Harbaugh look on during NFL football training camp drills on Saturday, July 30, 2011, in Santa Clara, Calif. (AP Photo/Ben Margot)

July 29, 2011; Santa Clara, CA, USA; San Francisco 49ers quarterback Colin Kaepernick (7) during training camp at the San Francisco 49ers headquarters and training facility. Mandatory Credit: Kelley L Cox-US PRESSWIRE

July 29, 2011; Santa Clara, CA, USA; San Francisco 49ers tight end Vernon Davis (85) puts on his helmet during training camp at the San Francisco 49ers headquarters and training facility. Mandatory Credit: Kelley L Cox-US PRESSWIRE

July 29, 2011; Santa Clara, CA, USA; San Francisco 49ers linebacker Patrick WIllis (52) during training camp at the San Francisco 49ers headquarters and training facility. Mandatory Credit: Kelley L Cox-US PRESSWIRE

San Francisco 49ers quarterback Colin Kaepernick tosses a pass during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

July 29, 2011; Santa Clara, CA, USA; San Francisco 49ers tackle Anthony Davis (76) during training camp at the San Francisco 49ers headquarters and training facility. Mandatory Credit: Kelley L Cox-US PRESSWIRE

July 29, 2011; Santa Clara, CA, USA; San Francisco 49ers head coach Jim Harbaugh walks around the field during training camp at the San Francisco 49ers headquarters and training facility. Mandatory Credit: Kelley L Cox-US PRESSWIRE

July 29, 2011; Santa Clara, CA, USA; San Francisco 49ers quarterback Alex Smith (11) during training camp at the San Francisco 49ers headquarters and training facility. Mandatory Credit: Kelley L Cox-US PRESSWIRE

San Francisco 49ers tackle Kenny Wiggins (65) and tackle Derek Hall (71) practice during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers linebacker Patrick Willis smiles while speaking with reporters before NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers center Chase Beeler speaks with reporters before NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers head coach Jim Harbaugh, right, practices a drill with quarterback Colin Kaepernick during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers tight end Vernon Davis practices during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers wide receiver Josh Morgan practices during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers linebacker Patrick Willis practices during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers tackle Anthony Davis, left, practices with guard Mike Person during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers quarterback Alex Smith smiles during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers wide receiver Michael Crabtree, right, walks with wide receiver Kyle Williams during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers head coach Jim Harbaugh watches a drill during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers safety Taylor Mays practices during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers head coach Jim Harbaugh watches a drill during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers quarterback Alex Smith looks on during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers guard Mike Iupati practices during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers linebacker Aldon Smith (48) practices during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. At left are linebackers Keaton Kristick (57) and Parys Haralson (98). (AP Photo/Jeff Chiu)

San Francisco 49ers defensive tackle Justin Smith (94), smiles during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. Also pictured are defensive tackles Demarcus Dobbs (78) and Ricky Jean Francois (95). (AP Photo/Jeff Chiu)

San Francisco 49ers head coach Jim Harbaugh, left, talks with quarterback Colin Kaepernick, as offensive coordinator Greg Roman watches from right during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers head coach Jim Harbaugh, left, talks with quarterback Colin Kaepernick as offensive coordinator Greg Roman looks on during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers center Chase Beeler, left, and quarterback Colin Kaepernick during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers defensive tackle Justin Smith (94) smiles during NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. Also pictured are defensive tackles Demarcus Dobbs (78) and Ricky Jean Francois (95). (AP Photo/Jeff Chiu)

San Francisco 49ers defensive lineman Ray McDonald, center, speaks to reporters after NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers head coach Jim Harbaugh smiles during a news conference after NFL football training camp in Santa Clara, Calif., Friday, July 29, 2011. (AP Photo/Jeff Chiu)

San Francisco 49ers' Adam Snyder, left, and Chase Beeler work during an NFL football training camp drill Saturday, July 30, 2011, in Santa Clara, Calif. (AP Photo/Ben Margot)

San Francisco 49ers Chase Beeler works out during NFL football training camp on Saturday, July 30, 2011, in Santa Clara, Calif. (AP Photo/Ben Margot)

San Francisco 49ers' Joe Staley (74) works during an NFL football training camp drill Saturday, July 30, 2011, in Santa Clara, Calif. (AP Photo/Ben Margot)

San Francisco 49ers head coach Jim Harbaugh appears on the field for NFL football training camp Tuesday, Aug. 2, 2011, in Santa Clara, Calif. (AP Photo/Paul Sakuma)

San Francisco 49ers quarterback Alex Smith, center, walks around the 49ers' NFL football training facility in Santa Clara, Calif., Tuesday, Aug. 2, 2011. Smith, who signed a one-year free agent contract last week, plans to return to workouts with the team Thursday. (AP Photo/Paul Sakuma)

San Francisco 49ers coach Jim Harbaugh ponders a question at a news conference as he talks about running back Frank Gore at the NFL football team's training facility in Santa Clara, Calif., Tuesday, Aug. 2, 2011. The two-time Pro Bowl player practiced for the first time after missing the first four days of training camp in a holdout. (AP Photo/Paul Sakuma)

San Francisco 49ers running back Frank Gore leaves for the day after NFL football training camp Tuesday, Aug. 2, 2011, in Santa Clara, Calif. The two-time Pro Bowl player practiced for the first time after missing the first four days of camp in a holdout. (AP Photo/Paul Sakuma)

San Francisco 49ers quarterback Colin Kaepernick throws a pass during NFL football training camp Tuesday, Aug. 2, 2011, in Santa Clara, Calif. (AP Photo/Paul Sakuma)

San Francisco 49ers tight end Vernon Davis practices during NFL football training camp Tuesday, Aug. 2, 2011, in Santa Clara, Calif. (AP Photo/Paul Sakuma)

San Francisco 49ers running back Frank Gore runs during practice at the NFL football team's training facility in Santa Clara, Calif., Tuesday, Aug. 2, 2011. The two-time Pro Bowl player practiced for the first time after missing several days of training camp in a holdout. (AP Photo/Paul Sakuma)

San Francisco 49ers running back Frank Gore put on his helmet during practice at NFL football training camp in Santa Clara, Calif., Tuesday, Aug. 2, 2011. The two-time Pro Bowl player practiced for the first time after missing several days of camp in a holdout. (AP Photo/Paul Sakuma)

San Francisco 49ers coach Jim Harbaugh smiles during a new conference as he talks about running back Frank Gore at the NFL football team's training facility in Santa Clara, Calif., Tuesday, Aug. 2, 2011. The two-time Pro Bowl player practiced for the first time after missing the first four days of training camp in a holdout. (AP Photo/Paul Sakuma)