Here are the notable underclassmen who have already declared their intentions to enter the 2017 NFL draft. Jan. 16 is the deadline to declare.
The draft will be held in Philadelphia on April 27-29.
Jamal Adams, S, LSU: "I kind of made the decision before the Louisville game, but at the same time I was kind of iffy. ...I definitely told the team, I told most of the guys that I loved them and that I was moving on. But a lot of them joked with me and said, 'One more year,' but I made a decision and I'm moving on." Read more.
Derek Barnett, DE, Tennessee
Garett Bolles, OT, Utah: Read more.
Caleb Brantley, DT, Florida: "Now, I'm fortunate enough to start the next chapter of my life and career. ...Like many kids, this was always a dream for me." Read more.
Noah Brown, WR, Ohio State
KD Cannon, WR, Baylor: "I plan to make the most out of this life-changing opportunity by providing a better lifestyle for my family and ensuring my two beautiful daughters won't have to experience the same struggles in life as I have." Read more.
Gareon Conley, CB, Ohio State
James Conner, RB, Pitt: Read more.
Dalvin Cook. RB. Florida State: "I just want to tell everybody I will be taking my talents to the 2017 NFL draft." Read more.
Zach Cunningham, LB, Vanderbilt: Read more.
Malachi Dupre, WR, LSU
Jerod Evans, QB; Isaiah Ford, WR; Bucky Hodges, TE, Virginia Tech: Read more.
D'Onta Foreman, RB, Texas: "I had a wonderful season. I've got to try to strike while the iron's hot." Read more.
Leonard Fournette, RB, LSU: "I want everyone to know that I will forever treasure my experience as a Tiger." Read more.
Myles Garrett, DE, Texas A&M: "I will play for any NFL team that gives me a chance and they will get my very best effort." Read more.
Davon Godchaux, DL, LSU: Read more.
Chris Godwin, WR, Penn State
Chad Hansen, WR, Cal
Charles Harris, DE, Missouri: Read more.
Brian Hill, RB, Wyoming: "This has been a dream of mine for a while now, and through hard work and dedication that dream finally has a chance to become a reality." Read more.
Elijah Hood, RB, North Carolina: Read more.
Malik Hooker, S, Ohio State: "Even though my time here didn't start the way I planned, I have gained a love and appreciation for Columbus that is hard to put into words." Read more.
Adoree' Jackson, CB, USC: Read more.
Roderick Johnson, OT, Florida State
Nazair Jones, DT, North Carolina
Brad Kaaya, QB, Miami:"I have zero worries that The U will indeed be back. No matter who is under center next season, I have no doubt in my mind they will have the platform and the resources around them to bring a major championship back to Coral Gables." Read more.
Alvin Kamara, RB, Tennessee
DeShone Kizer, QB, Notre Dame: "Thank you. NFL-bound." Read more.
Marshon Lattimore, CB, Ohio State
Carl Lawson, DE, Auburn: Read more.
Marlon Mack, RB, USF
Patrick Mahomes, QB, Texas Tech: "After talking with Coach Kingsbury and my family, we feel this is the best decision for me moving forward." Read more.
Damien Mama, OG, USC
Christian McCaffrey, RB, Stanford: "Since I was 6 years old, I've wanted to play in the NFL. It's been on every list of goals that I've ever written." Read more.
Malik McDowell, DT, Michigan State: "I'm ready to fulfill my childhood dream of playing in the NFL." Read more.
Raekwon McMillan, LB, Ohio State: Read more.
Joe Mixon, RB, Oklahoma: Read more.
Montae Nicholson, S, Michigan State
David Njoku, TE, Miami (Fla.)
Jabrill Peppers, S/LB, Michigan: Read more.
Samaje Perine, RB, Oklahoma
Ryan Ramczyk, OT, Wisconsin: "It's a big decision, but with this opportunity it's pretty difficult to pass up." Read more.
Cam Robinson, OT; Marlon Humphrey, CB; ArDarius Stewart, WR, Alabama: Read more.
John Ross, WR; Budda Baker, S; Sidney Jones, CB; Elijah Qualls, DT, Washington: Read more.
Travis Rudolph, WR, Florida State
Curtis Samuel, RB, Ohio State: Read more.
Ricky Seals-Jones, WR, Texas A&M
Garrett Sickels, DE, Penn State
JuJu Smith-Schuster, WR, USC: Read more.
Damore'ea Stringfellow, WR, Ole Miss: Read more.
Teez Tabor, CB; Quincy Wilson, CB; David Sharpe, OT, Florida: Read more.
Vincent Taylor, DT, Oklahoma State
Solomon Thomas, DE, Stanford: "Solomon is explosive, strong, athletic, relentless and he's worked extremely hard to put himself in the position to be an early draft pick." Read more.
Mitch Trubisky, QB, North Carolina: "This has been the most difficult decision I've ever had to make. But no matter what happens next, I know I'll never experience something as special as being a Tar Heel." Read more.
Eddie Vanderdoes, DL, UCLA
Charles Walker, DT, Oklahoma: Read more.
Anthony Walker, LB, Northwestern: "He's cemented a spot as one of the best players in Northwestern football history." Read more.
T.J. Watt, OLB, Wisconsin: "Thank you to all of my teammates, coaches and you fans for the incredible memories. Once a Badger, Always a Badger. On Wisconsin!" Read more.
Deshaun Watson, QB; Wayne Gallman, RB; Mike Williams, WR; Artavis Scott, WR, Clemson: Read more.
Marcus Williams, S, Utah
Stanley "Boom" Williams, RB, Kentucky: Read more.
Joe Yearby, RB, Miami