cbssports.com's draft grades:
https://www.cbssports.com/nba/news/2019-nba-draft-grades-pick-by-pick-evaluations-for-every-first-and-second-round-selection/
14. Boston Celtics (from Sacramento via Philadelphia): SG Romeo Langford, Indiana
It's a bit of a surprise, but I think it's an OK pick. He's a good player, and there were only a couple guys I had above him left. His freshman season at Indiana was disappointing, but he was hurt. This is a long-term play. He won't be very impactful in Year 1, especially with all the perimeter talent the Celtics have. Grade: C
22. Boston Celtics: PF Grant Williams, Tennessee
What is he exceptional at? He's exceptional at playing basketball. He's not as tall or athletic, no, but he played in the most athletic league in the country and got where he wanted to get. Look back at a recent drafts -- at a different position: The same things people say about Grant Williams, they said about Fred VanVleet, Jalen Brunson. NBA GMs are learning: Just take guys who are awesome at basketball. Grade: B
33. Philadelphia 76ers (from Cleveland via Orlando and New York): PG Carsen Edwards, Purdue
The Celtics, who traded for this pick, could use a microwave scorer. And Edwards brings that to Boston. He's a microwave scorer who can fill it up off the dribble, off the catch and running off screens. Grade: A
51. Boston Celtics: PG Tremont Waters, LSU
With so much uncertainty surrounding Boston -- especially at the point guard position -- Waters brings great value as a steady-handed ball-handler capable of doing everything an NBA starting point guard can do. At the very least, a great insurance piece at an important position. Grade: A
I'd rather the A's have been the first two selections, but on the whole, those are good grades. For whatever it's worth.