Missouri quarterback Drew Lock scores on a 3-yard touchdown run during the second half of an NCAA college football game against Vanderbilt Saturday, Nov. 10, 2018, in Columbia, Mo. Missouri won 33-28. (AP Photo/Jeff Roberson)

Missouri quarterback Drew Lock (3) attempts a pass against South Carolina linebacker Bryson Allen-Williams (4) during the first half of an NCAA college football game Saturday, Oct. 6, 2018, in Columbia, S.C. (AP Photo/Sean Rayford)

Missouri quarterback Drew Lock hugs defensive lineman Terry Beckner Jr. (5) after Missouri defeated Vanderbilt 45-17 in an NCAA college football game Saturday, Nov. 18, 2017, in Nashville, Tenn. (AP Photo/Mark Humphrey)

Missouri quarterback Drew Lock (3) runs with the ball against South Carolina defensive back Steven Montac (22) during the second half of an NCAA college football game Saturday, Oct. 6, 2018, in Columbia, S.C. (AP Photo/Sean Rayford)

Missouri quarterback Drew Lock (3) begins to throw a pass during the first half of the team's NCAA college football game against Alabama, Saturday, Oct. 13, 2018, in Tuscaloosa, Ala. (AP Photo/Butch Dill)

FILE - In this Oct. 28, 2017, file photo, Missouri quarterback Drew Lock (3) passes to Missouri running back Larry Rountree III (33), during the second half of an NCAA college football game, in East Hartford, Conn. The Tigers ranked eighth nationally in total offense last year. And with 10 starters on offense returning including its entire starting offensive line Missouri is in good shape to replicate its elite offense from last season.(AP Photo/Jessica Hill, File)

Missouri quarterback Drew Lock looks for an open receiver between Florida defenders during the first half of an NCAA college football game Saturday, Nov. 4, 2017, in Columbia, Mo. (AP Photo/L.G. Patterson)

FILE - In this Nov. 10, 2018, file photo, Missouri quarterback Drew Lock scores on a 3-yard touchdown run during an NCAA college football game against Vanderbilt in Columbia, Mo. Tennessee has an opportunity Saturday to show how far it has come in the last year. The Volunteers can become bowl eligible by beating Missouri in their home finale. (AP Photo/Jeff Roberson, File)

Missouri quarterback Drew Lock (3) runs with the ball against South Carolina defensive back Steven Montac (22) during the second half of an NCAA college football game Saturday, Oct. 6, 2018, in Columbia, S.C. (AP Photo/Sean Rayford)

Missouri quarterback Drew Lock (3) throws a pass during the first half of an NCAA college football game against Florida Saturday, Nov. 3, 2018, in Gainesville, Fla. (AP Photo/Phelan M. Ebenhack)

Missouri quarterback Drew Lock throws a pass during the third quarter of an NCAA college football game against Missouri State Saturday, Sept. 2, 2017, in Columbia, Mo. Missouri won 72-43. (AP Photo/L.G. Patterson)