Svi and Dok have the benefit of being young for their respective classes. Svi will graduate this year and turn 21 in early June. Azubuike will turn 19 in mid-September. That means that even if he comes back to KU in the fall, Azubuike could still get drafted before his twentieth birthday, and still having been at Kansas for three years.
It isn't so much years in college as it is age. Take Josh Jackson. He was at KU for only one year, but he will turn 21 in just a couple of weeks. Svi is younger than Jackson, but will have spent 4 years at KU. Azubuike arrived at KU with Jackson, but is thirty months younger than Josh Jackson!
Age is what matters most. And for those that care, here are the birth dates of each of the players in KU's incoming class, including Silvio even though he's already on campus.
Silvio De Sousa - October 7, 1998
Devon Dotson - August 2, 1999
David McCormack - July 2, 1999
Quentin Grimes - May 8, 2000
Look at that list again, think about the argument I just made, and you understand why I am so excited about Grimes' potential. Here are the birth dates of every player ranked in the top 10 in next year's class (Grimes is currently 8 on ESPN):
Barrett - June 14, 2000
Williamson - July 6, 2000
Reddish - September 1, 1999
Bol - November 16, 1999
Langford - October 25, 1999
Johnson - October 11, 1999
Simons - June 8, 1999
Grimes - May 8, 2000
Bazley - June 12, 2000
Little - February 11, 2000
Coaches and evaluators are discovering that age matters quite a bit. Zion Williamson, for instance, is a big, strong kid, and he doesn't turn 18 until this summer. Yes, he's an undersized PF, but how often are you going to run into a 6-6, 270 pound 17 year old that is both strong and agile like he is? That's why he's ranked so high. That's why Grimes keeps moving up. That type of athleticism at 17 is impressive because those kids are still growing and getting stronger naturally, without even considering work in the weight room or on the court.
On the other hand, a kid like Silvio, if he's going to play at the next level, really only has two more years at KU to develop. That's why he was eager to re-classify. He turns 20 this fall. He's probably leaving KU after the 2020 season either way. McCormack is probably on that same path. Same with Dotson.
If Grimes doesn't have the season he's hoping for, though, he could be back. He will turn just 19 next spring. He could legitimately be the #1 pick as a 20 year old leaving as a sophomore if he isn't a high lottery selection, although he talent probably makes him a lottery pick next summer anyway.
Some evaluators are even starting to sort players in tiers, then sorting those tiers by age, then ranking the younger players higher, because if you show me two kids that are equally skilled, but one just turned 15 last month, and the other turns 17 in six months, even if they are both sophomores, the younger kid is better by default because he's more than a year younger in actual age, regardless of classification.
That's why I have said Grimes is a top 5 talent in his class for a while now. If you consider him almost equal to Langford and Simons, you are quickly reminded that Langford is more than six months older, and Simons is eleven months older! Cam Reddish is nine full months older than Quentin Grimes!
That's a head start for each of those guys, and yet Grimes is basically right on their heels from a skill and athleticism standpoint, even though each of those guys was probably almost ready to start crawling, or already crawling, the day Grimes was born. That matters.