Yeah the Nixon thing is definitely a head scratcher, but let's go back a little bit. Nixon has played poorly all year long there's no doubt about that, but what was the answer to this problem? Jackson and Grill were both freshman and were in over their heads at the beginning of the year, Griffin is terrible on both ends of the floor, and Lewis can't guard his shadow. There was not an immediate fix for Steve because he had no other viable options, which again is still Steve's fault.
When Tre Jackson finally looked like he was getting the hang of things, Steve was going to place him in the starting 5, but Tre broke his nose so.. back to Nixon. That was the Auburn game. Tre came back wearing a mask and took a step back from how he'd been playing the previous games before his broken nose, which makes sense. 3 games later, Halliburton breaks his wrist. So again, back to Prentiss.
Prohm's hands have been tied this year because of the roster he assembled. He's had to live with Prentiss doing Prentiss things at times but he's the best of the worse in my opinion. If this were any other year that type of stuff wouldn't be able to fly but there was truly no other option.
Nixon's struggles and Jacobson's regression are pretty well documented. To me, one of the biggest issues this year is Zion being a complete non-factor. Between being a solid recruit and having some hype coming into this season, I fully expected him to be in the 8-10 ppg range. He's just not been able to give us anything.