Sometimes trading down works better than one could have possibly hoped for.
On April 26, 2009 the Patriots traded their third round pick (3.73) to Jacksonville, for a Jaguars seventh round pick (7.232) and a second round pick in the following year's draft (2010 2.44)
Jacksonville drafted Derex Cox, a solid but not spectacular corner who had a five-year NFL career.
The Patriots drafted a quarterback from Kent State that they planned on transitioning to another position with the seventh: Julian Edelman.
The following year the Pats drafted Rob Gronkowski with that second round pick.