KANSAS CITY, Mo. — At this stage of the postseason a year ago, Bill Self felt his Kansas team could not have been better prepared mentally. The Jayhawks had won three NCAA tournament games by an average of 18 points. They had fostered a delicate balance between playing loose and playing on edge. And then came the Elite Eight, and Villanova. “We weren’t a confident offensive team down the stretch in that particular game,” Self said Friday, recalling the 64–59 loss. “You look at it—what could we do different to put our guys in better situations, and that kind of stuff.