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:11. Running back Frank Gore: Gore had one of the best seasons of his career at the age of 30, and the team relied on him greatly. Sooner or later, Gore will slow down and the 49ers will move on.