Duke loses to a sub-par team every year come tournament time:  False.  Check the facts below are the dookies last 11 Tournament losses and how the team that beat them faired in the Tournament

1998-Kentucky- National Champs

1999- UCONN- National Champs

2000- Florida- National Runner-Up

2001- n/a

2002- Indiana- National Runner-Up

2003- Kansas- National Runner-Up

2004- UCONN- National Champs

2005- Michigan St.- Final Four

2006- LSU- Final Four

2007- VCU- 2nd round

2008- West Virginia- Elite 8

2009- Villinova- Final Four

In 12 years, one loss to a slouch?  did they lose games that they cold of won? yes, but it seems to me when they lose, they to to elite teams.  can't argue with the facts, teams have to be elite to make it to the final four and there are a lot of those on this list.