Using an early draft choice for an unusually young player can carry risks.2010-12 Starts Before Turning 24The upside: a potentially longer career window.As noted earlier Thursday, the San Francisco 49ers' Anthony Davis and the Seattle Seahawks' Earl Thomas are among three players to start all 48 games over the past three seasons before turning 24. Davis has already received a contract extension. Thomas is in line for one.The chart breaks out all others with more than 35 starts over the past three seasons before they turned 24.