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Kevon Looney Fr. F UCLA
Go
Looney has a great chance to be a lottery pick, maybe going as high as somewhere within the Top 10 and he was pretty much pegged as a one-and-done guy as soon as he signed with UCLA. I would be shocked if he came back to UCLA for his sophomore year.
Gary Payton II Jr. PG Oregon State
Go
Payton II came out of nowhere this year to become a star at Oregon State and become the Pac-12's Defensive Player of the Year. Payton has a very similar game to his dad with lockdown defensive skills and length and athleticism that allows him to get to the rim to score and it makes him a more than solid NBA prospect. Since his path to Oregon State was a long one (he is already 22), I think Payton II makes the jump this year and goes in the early second round.
Tyrone Wallace Jr. G Cal
Stay
Wallace had the best year of his career in 14-15, putting up 17 points per-game, seven rebounds and four assists while moving over to point guard. With that kind of versatility combined with his size, Wallace is an attractive NBA prospect. I think Wallace considers the NBA, but comes back knowing that he could maybe get himself into the first round if he improves his jump shot.
Nigel Williams-Goss So. PG Washington
Stay
The talented Husky point guard thought about declaring for the draft after his freshman year, so one has to think that he is considering the jump again. However, I think Williams-Goss will realize that he is far from a slam dunk to even go in the second round and will give it at least another year in Seattle to try and show that he is a guaranteed draft pick. If he decides to go, I think Williams-Goss can possibly play himself into the second half of the second round.
Tony Parker Jr. PF UCLA
Stay
I feel like Parker is this year's version of the guy everyone is hoping doesn't declare, but does after an excellent showing in UCLA's last two games in the NCAA Tournament. Parker is a big body (6'9 260) that had a great junior campaign that could get him drafted, but I think he sticks around for his senior year in hopes that he can have an even better senior season and work his way up draft boards.
Kaleb Tarczewski Jr. C Arizona
Stay
Tarczewski's draft stock has plummeted since the start of his career at Arizona as he has a seven-foot NBA body, but is inconsistent and hasn't seen to be able to expand a limited game over three seasons. However, his size and rim-protecting abilities should get him drafted whenever he decides to go. I think he recognizes that he can get himself back into the first round if he comes back for one more year, expands his game a bit on offense and expands his role with the Wildcats since a lot of Arizona mainstays are likely heading to the NBA.
Brandon Ashley Jr. PF Arizona
Go
Ashley has become an old reliable for the Wildcats - he scores about 11-12 a game, grabs around five boards and plays defense with his length and toughness. That length and toughness make him a nice NBA prospect, but his lack of anything else truly remarkable probably limits his potential. I think Ashley sees that he can't really improve his draft stock with another 11 ppg 5 rpg season and follows some of his Wildcat brethren into the NBA a year early.
Stanley Johnson Fr. SF Arizona
Go
Johnson is a slam dunk Top 10 pick and has always been viewed as a one-and-done. It would be a miracle if he returned to Tucson.
Rondae Hollis-Jefferson So. SF Arizona
Go
2014-15 wasn't kind to Hollis-Jefferson's draft stock for a number of reasons, but I still think he is a first rounder. I think he makes the jump after seeing how an extra year can lead to scouts and the media picking apart your game.
Jakob Poeltl Fr. PF Utah
Go
Poeltl is the hottest name in the Pac-12 right now in regards to the NBA after an impressive turn in the NCAA Tournament. I think Poeltl will strike while the iron is hot and get taken in the late-lottery or just outside of the lottery.
Josh Scott Jr. PF Colorado
Stay
Scott had a quite season after missing the start of Pac-12 play and with the Buffs' struggles, but he is still one of the best big men in the conference. He has never been a big time NBA prospect, but he is a guy who has the potential to get drafted whenever he heads to the NBA. I think he comes back for another year, knowing that a huge senior season could guarantee him getting drafted.