Disagree. Bacot has near ideal size and athleticism, and a developing skillset. He's more raw offensively, but is a solid defender and plus rebounder now. He's looked good this summer, and I expect that to carry over during the upcoming year. That is the trajectory of a OAD, and is, imho, why UNC is no longer quite the lock it once seemed to be.
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Stewart, at less than 6-9, lacks the ideal NBA measurements. He's a great rebounder and defender, but he can't play face up at all. I could see him as a guy that plays 2-3 years in college, at a high level, while lacking a few attributes that the NBA really desires in players.