@drgnslayr To answer your question, is this the worst defensive team under Self, the answer is YES, at least as measured by KenPom defensive efficiency ratings - and it's not really close. In 10 of the last 12 years prior to this one, KU has had a top 10 ranked defense; 6 times in the top 5. The two lowest ranked years were '09 at #12 and '14 at 22. Right now we're ranked 30th in DER. As I've pointed out elsewhere, no team has ever won a national championship with that low a defensive ranking. Now, those rankings are post tournament, so perhaps we will tighten up on the defensive end - although we've actually regressed on the metrics over the past few games.
You and @HawkChamp suggest that its that we're just not hungry enough on defense. I do think effort and awareness does come into play - esp. on transition defense (or lack thereof) - we've given up way too many transition baskets, which is very uncharacteristic of a Self-coached team. And, I agree that the short bench is used too much as an excuse, although it may be in the back of the guys minds that they need to pace themselves. But really, with every game from here on in, you get all the extra TV timeouts and you only play two games in a week. No excuse not to go hard the entire game.
But, I don't think it is just an effort issue. We simply don't have the right line-up and skills sets to be elite defensively. Other than LL, no wide bodies and other teams get more offensive rebounds and put backs, which means giving up more points per possession. We have virtually no rim protection to make up to cover up easy penetration - many of the blocked shots we've recorded have actually been from behind on transition - not in the half court rejecting drives to the hoop.
I think the primary issue is that certain players have no lateral quickness at all - Svi on the perimeter and LL and Bragg in the post. The former problem is obvious; with the latter two it means that they are often late with help defense. Combine the above with the apparent lack of court awareness on the the part of Svi, Vick and Bragg and the tendency of DG and JJ to lunge at the opposing player trying to get a steal, which allows an easy blow-by if not successful, it adds up to a team that gives up a lot of easy baskets - and to make at best average teams look like offensive juggernauts.
I'm hopeful that with the short calendar - there really is no tomorrow - and additional rest due to TV timeouts, the guys will put in the requisite effort on the defensive end. And, I would like to see us throw in a few possessions of zone and pressure to keep the other teams off-balance. And, I think our guys get much more focused on the defensive end when they are applying pressure.
We're not going to be an elite defensive team. But, we don't have to be. Given that we are an elite offensive team, we just need to be better that we have been. We shall see...