Nos. 1: Mitch King, 2004-08
King came to Iowa as a linebacker. He redshirted his first year and then surprised a lot of Iowa fans by popping up as the starting defensive tackle at the beginning of the 2005 season.
Needless to say, King—and the entire undersized, inexperienced defensive line—got pushed around, but he began to assert himself as the year progressed.
He had a breakout year in 2006, amassing seven sacks and 14 TFL.
King was never one to accumulate a ton of stats, and three of his four seasons as a starter were during what some would call the down years of the Ferentz era.
Nonetheless, by his senior year, a number of teams triple-teamed the Burlington native, and he, along with running mate Matt Kroul, were the key part of the No. 9 rush defense in the country.
Nos. 2: Jonathan Babineaux, 2000-04
The native of Port Arthur, Texas, came to Iowa as a fullback and played in his true freshman year, starting three games.
As a sophomore, he switched to defensive line, but broke his leg at the end of the spring drills and wound up redshirting.
In his third year, he earned a starting spot as a strong-side defensive end, where he totaled seven sacks and nine TFL.
He moved to defensive tackle as a junior, but lost much of the year to another injury.
However, he had a huge senior year, recording 11 sacks and leading the Big Ten with 25 TFL.