Now, the true freshman is going on the road for the first time and will face the nation's top-ranked defense.
"You always want to get after a freshman quarterback," senior linebacker Denicos Allen said. "He's inexperienced and hasn't really been in tough situations a lot, so you definitely want to put him in uncomfortable situations."
Etling was sacked five times against Nebraska last week, bringing his season total to eight in roughly a game and a half.
Despite that, Spartans defensive end Shilique Calhoun said Etling can move around a little bit.
"That guy is fast, he has some legs on him," he said. "He isn't one of those stable quarterbacks that is going to stay in the pocket. He is going to try and run around. Hopefully, I'm able to get back there and when I do, get my hands on him."
As a team, Purdue has allowed 16 sacks through six games.
Michigan State has 11 sacks, led by Tyler Hoover and Shilique Calhoun with three each.