We are taking a look at the top 60 players in the San Francisco 49ers' program and will rank them from 1-60. We are going to take a look in a 12-part series, moving upward. The ranking considerations are based on 2013 production, future projections, age, and contract status:6. Linebacker Patrick Willis: Willis is still at the top of his game. Yes, he just turned 29 and yes, he dealt with several nagging injuries in 2013. But he is still a top-notch defender, who is in his prime.