Ravens running back Ray Rice leads the NFL with 247 yards during the postseason, and his 64 carries are most among running backs. He is averaging just 3.9 yards per carry, though, and he has as many fumbles (two) as rushing touchdowns. The 49ers, who have a pair of All-Pro inside linebackers, don't leave many cracks for backs to wiggle through. Rice admitted as much this week. But he can have a major impact as a receiver. The 49ers will likely ask NaVorro Bowman to shadow him in man coverage, a matchup Rice feels he can exploit. Rice might not run for a lot of yards, but the Ravens will settle for big production in the short passing game.