Alba Berlin (2017–2019) In the 2018–19 season, Wagner played on a dual contract for both
Alba Berlin in the
Basketball Bundesliga (BBL), the top German league, and SSV Lokomotive Bernau in the third-tier
ProB league. In May 2019, he won the
BBL Best Young Player Award. In Game 2 of the BBL Finals against
Bayern Munich, Wagner scored a team-high 14 points, making all six of his shots. By the end of the season, he was averaging 4.6 points in 12.4 minutes per game in the BBL and played limited minutes in the
EuroCup.
Orlando Magic (2021–present) 2021–22: All-Rookie honors Wagner was selected with the eighth pick in the
2021 NBA draft by the
Orlando Magic. He and fellow lottery pick
Jalen Suggs signed with the Magic on August 3. Wagner posted his first NBA double-double with a career-high 11 rebounds and 14 points as well as 6 assists on December 18 against the
Brooklyn Nets. On December 27, 2021, Wagner put up a career-high 38 points in a 127–110 loss to the
Milwaukee Bucks. Wagner was named the NBA Eastern Conference Rookie of the Month for games played in December. Wagner's second NBA double-double occurred on January 12, 2022, against the
Washington Wizards when he upped his career-high assist plateau from 6 to 10 and added 14 points. This marked the first time a Magic rookie forward had ever posted 10 or more assists in a game. Following the
2021–22 NBA season he was named to the
NBA All-Rookie First Team.
2022–24: Steady improvement On November 5, 2022, Wagner scored a season-high 31 points and recorded six assists in a 126–123 overtime loss to the
Sacramento Kings. On December 29, he was suspended by the NBA for one game without pay due to coming off the bench during an altercation in a game against the
Detroit Pistons the day before. Wagner finished his sophomore season averaging 18.6 points, 4.1 rebounds, and 3.5 assists per game. In his third season, Wagner played 72 games for the Magic, posting career highs across the board with 19.7 points, 5.3 rebounds, and 3.7 assists per game.On April 27, 2024, Wagner recorded 34 points on 13-of-17 shooting and 13 rebounds, securing his first playoff double-double to lead the Magic to a 112–89 victory over the Cavaliers in Game 4, tying the series 2–2.
2024–present: Breakthrough On July 6, 2024, the Magic signed Wagner to a contract extension reportedly worth $224 million. On November 18, 2024, Wagner earned his first NBA Eastern Conference Player of the Week Award. On November 21, Wagner had a season-high 37 points, along with six rebounds, 11 assists, four steals and scored a game-winning three-pointer in a 119–118 victory against the
Los Angeles Lakers. On December 6, Wagner put up 30 points, five rebounds, five assists, one steal, and one block in a 102–94 loss to the
Philadelphia 76ers. He achieved his third-consecutive 30-point game for the second time in his career, joining
Shaquille O'Neal and
Tracy McGrady as the only players in Magic franchise history to score at least 30 points in at least three consecutive games multiple times. On December 7, 2024, it was announced that Wagner had suffered from a torn right
oblique, an injury which teammate
Paolo Banchero suffered earlier in the season. Wagner returned on January 23, 2025, scoring 20 points in a 101–79 loss against the
Portland Trail Blazers. On November 22, 2025, Wagner scored a season-high 37 points, grabbed 6 rebounds, and dished 7 assists to lead the Magic to a 133–121 win over the
New York Knicks. ==National team career==