This is why mock drafts are worthless.
Regardless of how much research draft experts put in, they can't account for all the trades, surprise picks (hello, Tyson Alualu) and madness that makes the draft so interesting.
The Philadelphia Eagles were originally scheduled to pick at 24, one slot ahead of the Ravens.
Like the Ravens, the Eagles have a need at cornerback, and most mock drafts had them going that route, taking either Kyle Wilson, Devin McCourty or Kareem Jackson.
That's not how things will play out.
Philly traded up to 13 to take Michigan outside linebacker Brandon Graham, meaning that there's a better chance that one of the three corners listed above is still available when the Ravens are on the clock.