Johnson carried the ball nine times in the first quarter for 36 yards, but Newton has been the key piece of Texas' past two touchdown drives, carrying the ball six times for 28 yards and two scores, and Texas leads 24-10 at halftime.
Johnson has 12 carries for 46 yards at the half.
Johnson jumped over Newton and Fozzy Whittaker to be named Texas' starting running back after starting preseason camp as the No. 3 back. Coaches credited a leaner, faster Johnson for the move, and he's busted the longest run of the day for the Longhorns, an 18-yarder.
The biggest reason he won the job was his power as a 251-pounder that coach Mack Brown hoped would help Texas better establish the downhill game. But with one yard standing between Johnson and a 7-3 early lead, he was stopped for a four-yard loss on a sweep outside.
Newton scored both of his touchdowns from inside two yards.