Each year a unique set of prospects enters the professional ranks with a chance to make an immediate impact on the country's most powerful sport. The 2013 NFL Draft, held April 25-27, won’t be any different. Left tackle is the second most important position on the field, as salaries and a history of early draft picks have indicated. It's fairly simple, actually. If the quarterback is the most important player on the field then he who protects the quarterback is No. 2. And the No. 1 overall pick in 2013 could be a bookend tackle.