South Dakota State Gronowski's freshman season at South Dakota State (SDSU) was postponed from the fall to the spring of 2021 due to the
COVID-19 pandemic. He was named the Jackrabbits starting quarterback going into his freshman season. Gronowski passed for 1,584 yards and 15 touchdowns and also rushed for 577 yards and seven touchdowns. He was named the
Missouri Valley Football Conference (MVFC) Offensive Player of the Year, as well as the conference Freshman and Newcomer of the Year, at the end of the season. South Dakota State advanced to the
2021 NCAA Division I Football Championship Game, but Gronowski suffered a serious knee injury on the first offensive drive of the game and the team lost 23–21 to
Sam Houston State. He used a medical redshirt for the 2021 fall season to recover from his injury. Gronowski returned as SDSU's starting quarterback at the beginning of the 2022 season. He was named second-team All-MVFC as the Jackrabbits returned to the FCS National Championship Game. Gronowski was named the games Most Valuable Player after dominating the Bison, completing 14 of 21 pass attempts for 223 yards and three touchdowns and rushing for 57 yards and one touchdown in a
45-21 victory over
North Dakota State. He finished the season with 2,967 passing yards and 26 touchdowns with five interceptions and also rushed for 408 yards and 12 touchdowns. Gronowski won the
Walter Payton Award as a junior. South Dakota State repeated as FCS national champions and he repeated as the Most Valuable Player of the
FCS Championship Game after completing 13-of-21 passes for 175 yards and one touchdown with an interception and rushing eight times for 62 yard and one touchdown in a 23-3 win against Montana. Gronowski finished the season with 3,058 passing yard and 29 touchdown passes while also rushing for 402 yards and eight touchdowns. On December 29, 2024, Gronowski entered the transfer portal.
Iowa On January 7, 2025, Gronowski announced that he would transfer to
Iowa. He was named the Hawkeyes' starting quarterback entering the 2025 season. Gronowski was selected to play in the 2026
East–West Shrine Bowl, and was selected as that year's offensive
MVP.
Statistics ==Professional career==