Teams good at switches on defense tend to be teams with roster continuity. Teague, Mitchell and Vital were all great individual defenders, but it also helped from a team defense perspective that they essentially played with each other 3 years (the redshirt year for Teague and Mitchell were huge keys). Look at UH. Why are they good at D? Kelvin has maintained roster continuity with a core nucleus of guys who grow together and can anticipate where to be. It also helps that he and his staff emphasize and teach D.
Look at our starting 5 this past Saturday: we literally had Omier (first year), VJ (first year), Wright (first year), Celestine (1st year) and then Love (multiple years). You have 5 guys on the court who have basically all played together for less than a year, nothing like the 20-21 or even 22. As good as an individual defender as VJ may be, it's a team game when you play switching D and if you're not all on the same page then it's not gonna be highly successful. Unfortunately, unlike Kelvin's staff, we have looked undercoached on the defensive side for 3 consecutive years that covers two different sets of assistant coaches. So, that makes me wonder if it is a priority with Drew.
Height obviously doesn't help Wright from a defensive perspective, but he's just overall bad at it. His defensive efficiency rating is literally near the bottom of the entire Big 12 (including reserves). Should that be surprising? No. He's played a game through school and AAU ball that focused almost all efforts on offense and his incredible skills are evidence of that. Very few freshmen come in with extensive defensive skills, which is why many spend the first year playing sparingly so that they don't overexpose the defensive deficiencies while they learn and improve that aspect of their game. He gives great effort at playing D, he's just learning how to do it. As hard of a worker as he is, I suspect we will see a highly improved version next year.
Nunn is an average defender and always has been. His defensive efficiency ratings over 4 years at VCU and Baylor are proof of that. Drew is the consummate positive salesman (something I truly appreciate of him) and so he sold Fran on how great of a defender Nunn was gonna be. Fran, being the biggest Big 12 promoter in the world, kept repeating the greatness of Nunn's defense on broadcasts and suddenly Nunn's skills were being oversold. He's a good defender, but nowhere close to a "lockdown" defender I see people repeat on here (probably because they heard Fran say it so many times).
Celestine and Love are also near the bottom of Big 12 defensive ratings and it plays out on the court game after game. Celestine is a streaky shooting role player who under ideal circumstances would be someone you bring in for 5 minutes and if he's feeling it on the offensive end you keep him out there. If not, he's back to the bench. Except, this year Drew and staff made a colossal blunder in trying to take a 6-7 natural guard and think he would be a great stretch 4 for us. That's on the staff, not Celestine. He is what he is.
And Roach? I don't even know where to begin other than to say I must have incorrectly thought all of these years that Duke emphasized players learning how to play D before they get extensive playing time. I thought Roach would at least be serviceable at it and he appears more lost than almost all the others.