Offensively, Garrett creates a "gravity" problem. On the perimeter, Marcus Garrett does not create any sort of gravity. Defenders can go under screens and sag well off him because he's not a threat to score from outside. That means that if he is on the floor with Doke and Dedric, there will be no space in the paint because there will be two big guys and three defenders in or around the lane.
I looked up Garrett's offensive numbers to be sure the eye test wasn't fooling me. They are truly offensive.
Freshman year - 62/136 from the field (45%), 12/45 from three (26%), 25/51 from FT (49%), 44 assists to 30 turnovers (1.47 to 1 ratio). There is nothing in that offensive profile from last year that spells danger for an opponent.
Sophomore year - 18/56 from the field (32%), 4/18 from three (22%), 21/32 from FT (66%), 25 assists to 7 turnovers (3.57 to 1 ration). Garrett is basically only dangerous if he is passing the ball. His FG and 3pt shooting are all but unplayable. Not just limited minutes. We are talking outright cannot get on the court levels. And that FT% was aided by a 7-8 night against Arizona State. Prior to that, he was 14/24 (58%).
It isn't enough to say that Marcus Garrett is a limited offensive player. He's worse than that. He's very nearly a net negative on the offensive end because of his poor shooting. Not a break even. A net negative. He's only grabbing about 4 rebounds per game. He'd need to be closer to six to balance out the fact that he's a non threat on offense.
That's the profile of a player that plays 17 mpg, not 27. We have gone through this so many times in the Self era that we know the names by heart - Morningstar... Traylor... Lucas... the list of "role" players over played and over exposed because they were "mistake free".
If this isn't corrected, KU's season will end with Marcus Garrett going 2-9 from the field, including 0-4 from three with 2 assists and 1 turnover to go along with 5 rebounds in 29 minutes of a Sweet Sixteen loss. You can bookmark this comment and laugh and point at me later if I am wrong, but that is my fear.
Garrett is a poor shooter. While I am sure he worked hard on it over the summer, there are flaws. I don't expect that he will ever be a great, or even good shooter. But he is the 2018 Chiefs defense - he's a day trip away from mediocre. He does other things well (some even extremely well), but his offensive limits make him strictly a role player.
He either has to crash the glass offensively to create extra possessions, or he has to create so much offense for others (basically become Doug Gottlieb). The only problem is that Gottlieb even may have been a superior shooter to Garrett, and was almost certainly a superior passer. I just don't see a clear path to improvement for Garrett that doesn't involve him becoming a much better shooter, and that isn't happening overnight.
That's why we need Grimes, KJ Lawson, Moore and others to step forward. Garrett is simply too limited offensively to shoulder as many minutes as he currently is being asked to. It's Jamari Traylor all over again. Great for 15 minutes. Not great for 25.