But can that defense hold up against a quality offense? We are about to find out.
The Hoosiers will be tested on Saturday when Western Kentucky and star quarterback Brandon Doughty come to Bloomington. Doughty, a sixth-year quarterback, is one of the nation's top passers, and he has the experience to compliment his elite talent.
Doughty currently ranks 12th nationally with 650 passing yards through two games. He had 4,830 yards last season with 49 touchdowns and 10 interceptions, while completing nearly 68 percent of his pass attempts. The 4,830 yards and the 49 touchdowns were both the top marks in all of college football last season.
"He's one of the most talented quarterbacks in the country," said Indiana defensive coordinator Brian Knorr. "He's been in their system for a number of years. Most of their offense is very experienced. It's a very talented group."
Indiana, of course, has talented and experienced quarterback of their own, which the Hoosiers believe could help them in their preparation for Western Kentucky.
'They're kind of like us in a lot of ways," said linebacker Marcus Oliver. "They play a lot like our offense. It's just exciting to finally be able to go out there and play against a team that's going to spread the ball out and try to run it outside and try to trick you with their eyes ... do what we do on offense, basically."