In his 6 years here, Holtmann has had plenty of talent to work with. The following guys who have been on his roster here are either currently in the NBA or previously played in the NBA.
Keita Bates-Diop, Jae'Sean Tate, Micah Potter (has played in handful of games the last 2 years), Duane Washington, EJ Liddell, Malaki Branham, and likely Sensabaugh this year.
Add in guys like Kaleb Wesson (playing in the Philippines), CJ Jackson (playing in Sweden), CJ Walker (playing in Germany), DJ Carton (in the G League), Kam Williams (who used to play in Denmark), Keyshawn Woods (has played in Europe for several years), Meechie Johnson who is starting and scoring 12.5 per game at S Carolina after sitting on the bench here, Jamari Wheeler (playing in Europe), Cedric Russell (playing in Serbia) after being unable to start here for some reason.
plus solid role guys like Kyle Young, Andre Wesson and Justin Ahrens. Sueing and Key will likely play somewhere beyond OSU. Heck even Joey Brunk is playing in Poland.
IE he has had talent, But the results stay where they are..