"The kids were seeing the game well, they were tackling well," Auburn's defensive coordinator said. "Then the big plays were tough to overcome, especially when they have the great defense they have.
"On all three of their scoring drives in the first half there was a penalty that helped keep the drives alive," Roof points out.
"On the first one there was third and five, the next one it would have been third and 13, but there was a facemask and it went to a first down," the coach said.
"The last one we were off the field on a third down pass interference penalty," Roof noted. "All of those things are critical factors in game. You never know, but today we were not good enough to overcome them."
The second half was all LSU as the Bengal Tigers improved their record to 8-0 and made a strong case to remain No. 1 in the polls for another week.
"We knew we couldn't give up big plays coming in, and we did," Roof said. "That is how they beat people and they made some big plays today. We didn't do a good job of eliminating them."
LSU converted just 3-8 third downs vs. Auburn, but averaged 6.7 yards per gain with the help of a 42-yard pass to Rueben Randle with 5:00 left in the second quarter for LSU's second touchdown and a 46-yard bomb to Randle with 40 seconds left before halftime.
"He is just an athletic player," LSU quarterback Jarrett Lee said of Randle. "That's why we recruited him to come to LSU. He makes those kinds of plays. Right now he's separating really well. He is getting open and we have got to get the ball in his hands."