San Francisco 49ers running back Frank Gore celebrates his third quarter touchdown run as Jacksonville Jaguars defensive end Jeremy Mincey (R) looks on during their NFL football game at Wembley Stadium in London, October 27, 2013. REUTERS/Andrew Winning (BRITAIN - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore reacts after his first quarter rushing touchdown against the Jacksonville Jaguars during their NFL football game at Wembley Stadium in London, October 27, 2013. REUTERS/Andrew Winning (BRITAIN - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (C) runs to score a first quarter touchdown as Jacksonville Jaguars defensive end Brandon Deaderick (above left) pursues during their NFL football game at Wembley Stadium in London, October 27, 2013. REUTERS/Andrew Winning (BRITAIN - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (L) reacts after scoring a first quarter touchdown against the Jacksonville Jaguars during their NFL football game at Wembley Stadium in London, October 27, 2013. REUTERS/Toby Melville (BRITAIN - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (R) eludes Jacksonville Jaguars strong safety Johnathan Cyprien to score a first quarter touchdown during their NFL football game at Wembley Stadium in London, October 27, 2013. REUTERS/Toby Melville (BRITAIN - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (L) gets past St. Louis Rams free safety Rodney McLeod to run in a touchdown during the first half of their NFL football game in St. Louis, Missouri, September 26, 2013.
REUTERS/Sarah Conard (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers running back Frank Gore (R) rushes up the field as Green Bay Packers linebacker Clay Matthews makes a tackle during the fourth quarter of their NFL season home opener football game in San Francisco, California September 8, 2013. The 49ers defeated the Packers 34-28. REUTERS/Stephen Lam (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers quarterback Colin Kaepernick (7) celebrates with running back Frank Gore (21) after Gore scored a touchdown during the fourth quarter of their NFL season home opener football game against the Green Bay Packers in San Francisco, California September 8, 2013. The 49ers defeated the Packers 34-28. REUTERS/Stephen Lam (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers running back Frank Gore (21) runs for a first down past Baltimore Ravens inside linebacker Ray Lewis (52) in the fourth quarter of the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Brian Snyder (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (21) breaks through a tackle by Baltimore Ravens cornerback Corey Graham (24) in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Jonathan Bachman (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (21) runs through a tackle by Baltimore Ravens cornerback Corey Graham (24) during the third quarter in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Sean Gardner (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (21) celebrates his third quarter touchdown against the Baltimore Ravens in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (21) scores a third quarter touchdown against the Baltimore Ravens in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (21) celebrates his touchdown run against the Baltimore Ravens with tackle Joe Staley (L) and quarterback Colin Kaepernick during the third quarter in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Jonathan Bachman (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers quarterback Colin Kaepernick (R) congratulates teammate Frank Gore after his touchdown against the Baltimore Ravens during the third quarter in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Jim Young (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (21) celebrates his touchdown run against the Baltimore Ravens during the third quarter in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Jonathan Bachman (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (21) celebrates his touchdown run against the Baltimore Ravens with running back LaMichael James during the third quarter in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Jonathan Bachman (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (21) celebrates his third quarter touchdown against the Baltimore Ravens with quarterback Colin Kaepernick (7) and teammate Joe Staley (74) in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (21) scores a third quarter touchdown against the Baltimore Ravens in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers head coach Jim Harbaugh (L) congratulates running back Frank Gore after his touchdown against the Baltimore Ravens during the third quarter in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Gary Hershorn (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers quarterback Colin Kaepernick (7) pats Frank Gore (21) on the head after a third quarter touchdown against the Baltimore Ravens in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Mike Segar (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (21) celebrates his third quarter touchdown against the Baltimore Ravens in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Mike Segar (UNITED STATES - Tags: SPORT FOOTBALL TPX IMAGES OF THE DAY)

San Francisco 49ers running back Frank Gore scores a touchdown against the Baltimore Ravens during the third quarter in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Gary Hershorn (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (21) scores a third quarter touchdown against Baltimore Ravens cornerback Corey Graham (24) in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Mike Segar (UNITED STATES - Tags: SPORT FOOTBALL)

Baltimore Ravens inside linebacker Ray Lewis (52) watches the coin toss as defensive end Haloti Ngata (92) and quarterback Joe Flacco (5) look on with San Francisco 49ers running back Frank Gore (21), defensive back C.J. Spillman (27) and inside linebacker Patrick Willis in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Jonathan Bachman (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (21) jumps over teammate Alex Boone (75) as he is chased by Baltimore Ravens inside linebacker Dannell Ellerbe (59) during the first quarter of the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Mike Segar (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore runs through drills during a NFL Super Bowl XLVII football practice in New Orleans January 31, 2013. The San Francisco 49ers will play against the Baltimore Ravens on February 3. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers quarterback Colin Kaepernick (L) and teammate Frank Gore stand with head coach Jim Harbaugh during a NFL Super Bowl XLVII football practice in New Orleans January 31, 2013. The San Francisco 49ers will play against the Baltimore Ravens on February 3. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers quarterback Colin Kaepernick (R) hands off to running back Frank Gore (L) during practice for the Super Bowl in New Orleans, January 30, 2013. Super Bowl XLVII will be played between the San Francisco 49ers and the Baltimore Ravens on February 3. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers running back Frank Gore runs with the ball during practice for the Super Bowl in New Orleans, January 30, 2013. The Super Bowl XLVII will be played between the San Francisco 49ers and the Baltimore Ravens on February 3. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers running back Frank Gore (L) talks with his head coach Jim Harbaugh during practice for the Super Bowl in New Orleans, January 30, 2013. The Super Bowl XLVII will be played between the San Francisco 49ers and the Baltimore Ravens on February 3. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers running back Frank Gore speaks with journalists during Media Day for Super Bowl XLVII in New Orleans, Louisiana, January 29, 2013.
REUTERS/Jeff Haynes 

San Francisco 49ers running back Frank Gore speaks during a news conference ahead of Super Bowl XLVII in New Orleans, Louisiana January 28, 2013.

REUTERS/Jeff Haynes 

San Francisco 49ers running back Frank Gore speaks during a news conference ahead of the NFL's Super Bowl XLVII in New Orleans, Louisiana January 28, 2013. The San Francisco 49ers will meet the Baltimore Ravens in the game on February 3. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers running back Frank Gore speaks during a news conference ahead of the NFL's Super Bowl XLVII in New Orleans, Louisiana January 28, 2013. The San Francisco 49ers will meet the Baltimore Ravens in the game on February 3. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL) 

Former San Francisco 49ers owner Edward J. DeBartolo, Jr. holds the NFC championship trophy as a 49ers' Frank Gore holds an NFC Champions t-shirt in the locker room after the 49ers defeated the Atlanta Falcons in the NFL NFC Championship football game in Atlanta, Georgia January 20, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers' Frank Gore (21) scores a second half touchdown past Atlanta Falcons' Thomas DeCoud (28) and William Moore (25) in the NFL NFC Championship football game in Atlanta, Georgia January 20, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (L) is congratulated by teammates Vernon Davis (C) and quarterback Colin Kaepernick after his touchdown on the Atlanta Falcons during the fourth quarter in the NFL NFC Championship football game in Atlanta, Georgia January 20, 2013. REUTERS/Gary Hershorn (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (R) scores a touchdown past Atlanta Falcons strong safety William Moore (25) during the fourth quarter in the NFL NFC Championship football game in Atlanta, Georgia January 20, 2013. REUTERS/Chris Keane (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (L) sores a touchdown past Atlanta Falcons strong safety William Moore (R) during the fourth quarter in the NFL NFC Championship football game in Atlanta, Georgia January 20, 2013. REUTERS/Chris Keane (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers quarterback Colin Kaepernick (7) congratulates teammate Frank Gore (21) after scoring on a third quarter touchdown run against the Atlanta Falcons in the NFL NFC Championship football game in Atlanta, Georgia January 20, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers runningback Frank Gore celebrates a third quarter touchdown against the Atlanta Falcons in the NFL NFC Championship football game in Atlanta, Georgia January 20, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (R) scopres a touchdown past Atlanta Falcons strong safety William Moore (C) and middle linebacker Akeem Dent during the third quarter in the NFL NFC Championship football game in Atlanta, Georgia January 20, 2013. REUTERS/Gary Hershorn (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers runningback Frank Gore (21) runs through a tackle attempt by Atlanta Falcons' Jonathan Babineaux (95) and Stephen Nicholas (54) to score a touchdown in the third quarter of the NFL NFC Championship football game in Atlanta, Georgia January 20, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (R) is congratulated by quarterback Colin Kaepernick (C) and Vernon Davis after scoring a touchdown against the Atlanta Falcons during the third quarter in the NFL NFC Championship football game in Atlanta, Georgia January 20, 2013. REUTERS/Gary Hershorn (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers runningback Frank Gore (21) runs through a tackle attempt by Atlanta Falcons' Jonathan Babineaux (95) and Stephen Nicholas (54) to score a touchdown in the third quarter of the NFL NFC Championship football game in Atlanta, Georgia January 20, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers runningback Frank Gore (21) celebrates as he runs into the end zone for a third quarter touchdown against the Atlanta Falcons in the NFL NFC Championship football game in Atlanta, Georgia January 20, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers Frank Gore (C) is congratulated by teammates Vernon Davis (R) and Colin Kaepernick (L) after scoring a touchdown against the Green Bay Packers in the fourth quarter during their NFL NFC Divisional play-off football game in San Francisco, California January 12, 2013. REUTERS/Robert Galbraith (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers Frank Gore (R) runs between Green Bay Packers Tramon Williams (L) and Mike Daniels (C) in the first quarter during their NFL NFC Divisional playoff football game in San Francisco, California January 12, 2013. REUTERS/Robert Galbraith (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore launches the ball into the stands after scoring a touchdown during the fourth quarter of their NFL football game against the Arizona Cardinals in San Francisco, California December 30, 2012. REUTERS/Beck Diefenbach (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers running back Frank Gore (R) rushes with the ball as Arizona Cardinals' Adrian Wilson (L) tries to make the tackle during the third quarter of their NFL football game in San Francisco, California December 30, 2012. REUTERS/Beck Diefenbach (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers running back Frank Gore is stopped by multiple Arizona Cardinals defenders during the second quarter of their NFL football game in San Francisco, California December 30, 2012. REUTERS/Beck Diefenbach (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers running back Frank Gore (C) is tackled by Miami Dolphins Karlos Dansby (L) and Jared Odrick during their NFL football game in San Francisco, California December 9, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers running back Frank Gore runs past Miami Dolphins linebacker Karlos Dansby to the one-yard-line to set up a touchdown during the fourth quarter of their NFL football game in San Francisco, California December 9, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers running back Frank Gore is driven to the turf by Miami Dolphins linebacker Koa Misi during their NFL football game in San Francisco, California December 9, 2012. REUTERS/Robert Galbraith (UNITED STATES) 

San Francisco 49ers running back Frank Gore (21) rushes for eleven yards for a first down during the third quarter of his NFL football game against the Chicago Bears in San Francisco, California, November 19, 2012. REUTERS/Beck Diefenbach (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers running back Frank Gore (21), is tackled by Chicago Bears safety Major Wright (21) during the first half of their NFL football game San Francisco, California November 19, 2012. REUTERS/Beck Diefenbach (UNITED STATES - Tags: SPORT FOOTBALL)

San Francisco 49ers running back Frank Gore (21) is tackled by Chicago Bears free safety Chris Conte (47) during the first half of their NFL football game San Francisco, California November 19, 2012. REUTERS/Beck Diefenbach (UNITED STATES - Tags: SPORT FOOTBALL)

Arizona Cardinals William Gay is pushed to the ground by the San Francisco 49ers Frank Gore in the first half during their NFL football game in Phoenix, Arizona October 29, 2012. REUTERS/Darryl Webb (UNITED STATES - Tags: SPORT FOOTBALL) 

San Francisco 49ers running back Frank Gore (C) runs for a 20-yard gain against Seattle Seahawks' Alan Branch (L) and Leroy Hill during the fourth quarter of their NFL football game in San Francisco, California October 18, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: SPORT FOOTBALL)