Freshman season Wahl arrived as a highly touted freshman, but the Badgers already had experienced forwards
Nate Reuvers,
Micah Potter, and
Aleem Ford. His talent, however, was undeniable, and coach
Greg Gard had to find a role for Wahl. Gard viewed Wahl as a "Swiss Army knife" capable of playing multiple roles: distributing the ball as a point guard
point guard, defending the opposing team's best player, sliding over to take a charge, or being the primary scorer. He played in all 31 games, including three starts, averaging 2.5 points and 2.6 rebounds while playing 15.5 minutes per game as a true freshman.
Sophomore season Wahl secured a larger role on a senior-heavy Wisconsin roster. He played in 31 games and started the final 18. As the team's second-leading rebounder, he averaged 4.3 rebounds per game. Wahl's assertiveness grew on the court as his playing time and confidence increased. Wahl showed his all-around skills during a victory against
UW–Green Bay when he scored 11 points, 15 rebounds, four assists, two steals and two blocks.
Junior season Wahl was a big part of the 2021–22 season for the Badgers, as they won a share of the
Big Ten regular season title. Early in the season, Wahl was named to the All-Tournament Team at the
2021 Maui Invitational where the Badgers were the champions of the tournament. He improved his scoring, field goal percentage, free throw percentage, rebounding, assists, steals, and blocks. He was tabbed as the "glue guy" for the Badgers by coach
Greg Gard. Wahl scored 20 or more points three different times during the season, but none was more complete than the victory over the 16th-ranked
Ohio State Buckeyes. Wahl put up 20 points on 8 of 10 shooting (2–4 3FG), 7 rebounds, 6 assists, and 3 steals in the top 20 matchup. Following the season, Wahl was named Big Ten honorable mention.
Senior season The Badgers came out strong during the 2022–23 season with a third-place finish at the 2022
Battle 4 Atlantis where Wahl was named to the All-Tournament Team. Wahl and the Badgers started 11–2 and 3–0 in the Big Ten before Wahl went down with an ankle injury against Minnesota. Wahl missed the next three games, all of which the Badgers lost. Wahl returned but was hampered for most of the rest of the season. Wahl still managed an 11.3 scoring average per game plus a career-high in rebounds (6.3) and assists (2.5) per game. Following the season, Wahl had the decision to go pro, transfer or return for a 5th season due to the pandemic.
Graduate season About a month after the 2022–23 season ended, Wahl announced that he will take advantage of the pandemic wavier and return to Wisconsin for a fifth season. Early in the season, the Badgers participated in the 2023
Fort Myers Tip-Off in which Wisconsin defeated
SMU for the title. Wahl was named to the All-Tournament Team and the Tournament's MVP. Following the completion of the regular season, Wahl was named All-Big Ten honorable mention by the coaches. ==Professional career==