Since Duke's most recent Final Four appearance ('04), UNC has been to the Final Four three times, with one title in the bag and another just 80 minutes away.
That's why Duke is back in the one-and-done business. Right or wrong, it's that simple.
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Either by their own volition, or their own recruiting failures, Duke has avoided one-and-done recruits.
While Duke coach Mike Krzyzewski has been criticized for this decision, Ohio State's Thad Matta has been burned by it.
Ohio State freshman B.J. Mullens declared for the NBA Draft earlier this week. Since '06-'07, OSU has had five players (Greg Oden, Mike Conley Jr., DeQuan Cook Kosta Koufos and Mullens) leave after just one season.
No Duke players have left after one season over the same period.