A ball flicks through the net in front of the NCAA logo on the marquis as Middle Tennessee's shoots during NCAA college basketball practice in Pittsburgh, Saturday, March 20, 2010.  (AP Photo/Keith Srakocic)

Final Four teams have 4 different sets of drug-testing rules

Players at Kentucky, Wisconsin, Michigan State and Duke operated under the same rules on their road to the Final Four this season — except when it came to the frequency of their doping tests and the penalties they faced for failing.