He threw 33 passes and completed 17 for 224 yards, but did not have a touchdown and was picked off twice in his team's first loss of the 2013 football season after starting 3-0.
Marshall appeared to be having trouble throwing the football in the rain, which was very heavy at times in Auburn's 35-21 loss at LSU. The junior admitted that was the case.
"It was difficult to grip the ball because I really don't have big hands, but then again that's not an excuse," he said. "It was really coming down in the first quarter. Still, I'm still supposed to make those throws."
Asked what he learned on Saturday night at Tiger Stadium that will help him down the road, the quarterback said, "Making better decisions. The interception I threw was too far inside. I should have thrown it outside. All that just comes with practice. I'm just going out next week to practice and work on that."
Marshall said the Tigers need to correct the mental mistakes that were costly on Saturday night. With an off week before playing Ole Miss, the Tigers will have extra time to do that.
"We are still confident going into the bye week and two weeks after this," Marshall said. "We are just going to go in make the corrections we messed up on tonight and just get better after that."
Marshall added, "I grew up a lot. I learned from tonight and the mistakes I made. I was just able to play ball in the second half."