They will shave points off that easily just by having experience. The understanding of defensive rotation will be much better this year. It will not happen nearly as much that guys are late getting out on shooters, if they got out on them at all.
Some may disagree, minus the TCU game and 3 or 4 others the defense did improve the 2nd half of the season. Not where it is needs to be, but you could see the light bulb slowly start to turn on.
People remember a handful of bad defensive games at the end of the year and try to use them as proof that they didn't improve. But those handful of games at the end of the year looked just like every game at the beginning of the year.
Those games at the end of the year were a combination of bad defense and lights out shooting. They didn't even need lights out shooting at the beginning of the year because they were getting layups at will.