According to Hobbes: Packers Offseason Primer on the NFL Combine: Cornerbacks

The NFL is a passing league now and it makes sense that cornerbacks are one of the most highly drafted players in the NFL, right after wide receivers; just as offenses are trotting out 5 wide receivers, defenses are following suit with multiple cornerbacks, with the nickel cornerback being a de facto starter these days. With that being said Ted Thompson doesn’t have the best track record of picking cornerbacks in the draft.