San Francisco 49ers quarterback Colin Kaepernick (7) works against the Baltimore Ravens during the second half of the NFL Super Bowl XLVII football game Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Gene Puskar)

San Francisco 49ers wide receiver Michael Crabtree (15) and quarterback Colin Kaepernick (7) celebrate Crabtree's 31-yard touchdown reception during the second half of the NFL Super Bowl XLVII football game against the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/David Goldman)

San Francisco 49ers quarterback Colin Kaepernick (7) wipes his face after losing 34-31 to the Baltimore Ravens in the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/David Goldman)

San Francisco 49ers quarterback Colin Kaepernick (7) runs from Baltimore Ravens nose tackle Terrence Cody (62) during the first half of the NFL Super Bowl XLVII football game Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Elaine Thompson)

San Francisco 49ers quarterback Colin Kaepernick (7) reacts after throwing an incomplete pass during the second half of the NFL Super Bowl XLVII football game against the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. The Ravens won 34-31. (AP Photo/Evan Vucci)

Baltimore Ravens linebacker Paul Kruger (99) reacts after sacking San Francisco 49ers quarterback Colin Kaepernick (7) during the first half of the NFL Super Bowl XLVII football game, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Bill Haber)

San Francisco 49ers quarterback Colin Kaepernick (7) runs into the end zone for a 15-yard touchdown run as Baltimore Ravens cornerback Cary Williams (29) and 49ers wide receiver Michael Crabtree (15) watch during the second half of the NFL Super Bowl XLVII football game Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Gene Puskar)

San Francisco 49ers quarterback Colin Kaepernick (7) crosses the goal line for a touchdown as wide receiver Michael Crabtree (15) reacts in the fourth quarter of the NFL Super Bowl XLVII football game against the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Dave Martin)