The Hawkeyes won 10 games in 2021, winning the Big Ten West Division title and advancing to the conference championship game. Iowa concluded the season with an appearance in the Citrus Bowl and was ranked 23rd in the final national rankings.
Iowa’s defense set a school record and led the nation with 25 interceptions in 2021. The defense ranked among national leaders in takeaways (30, third), defensive touchdowns scored (four, seventh), pass efficiency defense (110.5, sixth), turnover margin (0.8, 11th), rushing defense (114.4, 13th), scoring defense (19.2, 13th) and total defense (328.8, 18th).
Campbell led the Hawkeye defense and ranked first in the nation with 143 tackles. Campbell earned first-team All-Big Ten and earned second-team All-America honors from two media outlets. He scored two of Iowa’s four defensive touchdowns in 2021, including a fumble return and an interception return. Benson was second on the team with 105 tackles while earning third-team all-conference honors.
Following back-to-back narrow losses to open the 2020 season, Iowa won its final six games, all in Big Ten play. The Hawkeyes allowed just seven points in three of the six wins. The winning streak included road wins at Minnesota, Penn State and Illinois, and trophy game victories over Minnesota, Nebraska, and Wisconsin. The Hawkeyes were ranked 15th in the nation in the final CFP rankings and Coaches Poll, and 16th by the AP. The Hawkeyes were selected to compete in the 2020 Music City Bowl, but that event was canceled.
Iowa’s defense in 2020 led the nation in allowing opponents just 4.3 yards per play. The Hawkeyes ranked among the national leaders in several additional categories, including scoring (16.0, 7th), pass efficiency defense (110.1, 9th), rushing defense (107.6, 11th), total defense (313.8, 12th), red zone defense (.727, 12th) and interceptions (11, 19th).
Iowa won 47 games from 2015-19, the highest total in school history over any five-year period, and a total that ranked ninth nationally. Iowa won its final four games in 2019 and ranked 15th in the final Associated Press and coaches polls.
Senior linebacker Nick Niemann led the Hawkeyes in tackles and ranked fourth in the Big Ten in tackles per game (9.6) in 2020. Niemann earned third-team all-conference honors while Benson earned honorable mention recognition. Niemann was selected by the Los Angeles Chargers in the sixth round of the 2021 NFL Draft, while Barrington Wade signed a free agent contract (Baltimore) immediately following the draft.
The Hawkeyes concluded the 2019 campaign with a 10-3 record following a 49-24 rout over No. 22 USC in the Holiday Bowl. The three losses were all to ranked opponents by a combined 14 points. Iowa was 4-1 in trophy games for the third straight season.
The 2019 Hawkeye defense ranked among the top 17 in the nation in scoring defense (5th, 14.0), first downs allowed (9th, 16.6), total defense (12th, 308.2), rushing defense (14th, 112.5), turnover margin (14th, 0.7) and pass efficiency defense (17th, 116.0). Iowa tied for second in the nation in interceptions (20) in 2018 after leading the nation in 2017 with 21. Iowa’s 64 thefts over the past four seasons tie for the most in the nation.
Senior linebacker Kristian Welch led the Iowa defense in 2019, recording 87 tackled to lead the team despite missing three full games. Welch earned honorable mention All-Big Ten honors. He signed a free agent contract with Baltimore immediately following the 2020 NFL Draft and was with the Ravens throughout the season.
Iowa completed 2018 with nine wins and a final AP ranking of No. 25. The Hawkeyes earned a 27-22 Outback Bowl win over No. 18 Mississippi State to close the season with three straight wins. The four losses came by a total of 23 points and all were decided in the final minutes of play. Iowa tied for second in the Big Ten West Division.
Iowa’s linebackers were an inexperienced crew in 2018 but contributed greatly to Iowa’s high national ranking in several team categories. Amani Hooker, splitting time between safety and outside linebacker, earned All-America recognition while being named the Tatum-Woodson Big Ten Defensive Back of the Year. Hooker declared for the NFL following his junior season and was selected in the fourth round of the 2019 NFL Draft by Tennessee.
The Hawkeye defense led the nation with 21 interceptions in 2017, led by defensive back Josh Jackson, who led the nation individually with eight interceptions to match Iowa’s single-season record. Jackson and linebacker Josey Jewell each earned unanimous consensus All-America honors. The Hawkeyes ranked 17th in the nation in scoring defense (19.9), allowing less than 20 points per game for the third consecutive season. Iowa matched a school record with four interception return touchdowns.
Jewell led the Big Ten in tackles for the second time in three seasons (he was second as a junior) and ranked fourth in the nation in tackles per game (11.3). He earned unanimous consensus All-America honors and was named the Big Ten Conference linebacker and defensive Player of the Year. Jewell earned the Lott IMPACT Trophy and the Jack Lambert Trophy and was a finalist for the Nagurski Trophy.
Jewell became the third Hawkeye selected in the 2018 NFL Draft when he was selected in the fourth round by the Denver Broncos. Ben Niemann, also a three-year starter for the Hawkeyes, was a key defensive contributor for the Kansas City Chiefs for four seasons before signing with Arizona for 2022.
Jewell led the Iowa defense in 2016, ranking second in the conference in tackles while earning second-team All-Big Ten honors for the second consecutive season. The Hawkeyes ranked 13th in the nation in scoring defense and red zone defense, 19th in pass efficiency defense and 23rd in total defense.
The Hawkeyes posted a perfect 12-0 regular season record in 2015, winning the Big Ten West Division. Iowa participated in the 2016 Rose Bowl Game and the 2015 Big Ten Championship and ended the season in the top 10 in the final national rankings.
Iowa ranked first in the Big Ten and 10th in the nation in pass interceptions in 2015, while also ranking in the top 20 nationally in pass break-ups, turnover margin, turnovers gained, and rushing defense. Seven defensive players earned All-Big Ten recognition.