If you're wondering which positions the 49ers will target with their arsenal of draft picks, a good guide is the positions they've pursued in free agency. San Francisco has shown interest in at least two cornerbacks, Sean Smith and Nnamdi Asomugha, known for their big bodies and ability to play press coverage. Smith signed with the Chiefs while Asomugha remains unsigned and still could end up with the 49ers. If he doesn't, the 49ers may find a similar type of player in the draft. Last week, the team met with North Carolina State's 6-3 David Amerson prior to the Wolfpack's pro day. Amerson had an astounding 13 interceptions in 2011. To put that in perspective, only two other cornerbacks sure to be taken in the draft - Mississippi State's Johnthan Banks (16) and Oregon State's Jordan Poyer (13) - had 13 interceptions over their college careers.