San Francisco 49ers quarterback Colin Kaepernick laughs as he walks onto the Superdome field for practice on Saturday, Feb. 2, 2013, in New Orleans. The 49ers are scheduled to play the Baltimore Ravens in the NFL Super Bowl XLVII football game on Feb. 3. (AP Photo/Mark Humphrey)

Associated Press
San Francisco 49ers quarterback Colin Kaepernick laughs as he walks onto the Superdome field for practice on Saturday, Feb. 2, 2013, in New Orleans. The 49ers are scheduled to play the Baltimore Ravens in the NFL Super Bowl XLVII football game on Feb. 3. (AP Photo/Mark Humphrey)
San Francisco 49ers quarterback Colin Kaepernick laughs as he walks onto the Superdome field for practice on Saturday, Feb. 2, 2013, in New Orleans. The 49ers are scheduled to play the Baltimore Ravens in the NFL Super Bowl XLVII football game on Feb. 3. (AP Photo/Mark Humphrey)
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