The 49ers haven't lost with Michael Crabtree on the field this season. Whereas only Matt Cassel averaged fewer passing yards per game than Kaepernick from Weeks 2 to 11, Kaepernick has led the NFL in touchdown-interception ratio since Week 12. ... Kaepernick averages 47.4 more passing yards and 57.4 more rushing yards per game in postseason than regular season. ... Although he's played just four playoff games, Kaepernick already ranks fifth behind Steve Young, John Elway, Roger Staubach and Donovan McNabb in postseason rushing yards by a quarterback. ... The 49ers are attempting to become the first team in the past decade to win the Super Bowl after entering the postseason with a winning streak of at least five games.