No. 18 LSU 63, New Mexico State 7: Brandon Harris came off the bench to throw for three touchdowns and run for two more to lead the host Tigers to an easy victory over the Aggies.

Harris, a freshman who almost led LSU (4-1) from behind last week off the bench against Mississippi State, came in midway through the second quarter and finished 11-of-14 for 178 yards and rushed for 36 yards. Leonard Fournette ran 18 times for 122 yards and two scores, while Malachi Dupre had three catches for 54 yards and a touchdown.

Tyler Rogers was 14-of-31 for 86 yards and threw two interceptions for New Mexico State (2-3), which like the Tigers finished with four turnovers. Andrew Allen rushed five times for 113 yards and the Aggies' only score.

Things started slow for the LSU offense with starter Anthony Jennings under center with the Tigers leading just 14-0 when Harris entered the game and one of those scores coming on an interception return. But in the final 5:52 of the second quarter, the Tigers scored four times, with Fournette going in from 17 and 5 yards out, Harris finding Dupre for a 27-yard score and Melvin Jones for a 3-yard touchdown for a 42-7 halftime advantage.

Harris opened the scoring in the third with a 10-yard touchdown pass to Travin Dural, then scored on rushing touchdowns of 1 and 2 yards to close out the scoring. The Tigers finished with 563 yards of total offense, including 363 yards on the ground for an average of 6.7 yards per carry.

GAME NOTEBOOK: The two teams combined for six turnovers in the first quarter. … Allen's touchdown run of 79 yards was the longest rush of the season for the Aggies. … LSU is 39-0 under coach Les Miles in non-conference regular-season games.