Heidegger played for two years at Crespi Carmelite High School. He suffered a back injury as a sophomore.[1] As a junior, he transferred to Blair Academy in New Jersey but did not play basketball. Heidegger transferred to Oaks Christian School for his senior year. He scored a career-high 40 points on February 6, 2016, in a 76–66 win against Agoura High School.[2] Heidegger averaged 28 points, 5.9 rebounds, 2.9 assists, and 1.4 steals per game. He was named to the Southern Section All-Division 4A Team, Los Angeles Daily News All-Area Team, and Ventura County Star All-County Team.[3]
College career
As a freshman at UC Santa Barbara, Heidegger averaged 7.6 points, 2.1 rebounds, and 1.4 assists per game, though the team struggled to a 6–22 record.[4] On November 11, 2017, Heidegger scored a career-high 33 points while shooting 8-of-14 from beyond the arc in an 85–66 win against North Dakota State.[5] He averaged 19.1 points, 2.5 rebounds, and 2.5 assists per game as a sophomore, shooting 40.4% from three-point range.[6] Heidegger earned First Team All-Big West honors.[7] He averaged 11.9 points, three rebounds, and 2.7 assists per game as a junior.[8]
On November 27, 2019, Heidegger suffered a concussion after hitting his head on a metal railing during a game against Portland State, forcing him to miss more than a month.[9] On February 1, 2020, he nearly posted a triple-double with 14 points, 11 assists, and nine rebounds in an 87–62 win against Long Beach State.[10] Heidegger had a season-high 31 points on February 13, in an 84–75 loss at UC Davis.[11] He suffered a season-ending ankle injury on February 27 against UC Riverside. As a senior, Heidegger led UC Santa Barbara in scoring at 16 points per game, and also averaged 3.2 assists and 2.4 rebounds per game. He was named to the First Team All-Big West.[12] Heidegger finished his college career with 1,347 points, ranking 15th on the Gauchos' all-time scoring list.[7]
Professional career
Maccabi Playtika Tel Aviv / Bnei Herzliya (2020–2021)
On September 22, 2020, Heidegger signed his first professional contract with Maccabi Playtika Tel Aviv of the Israeli Premier League.[13] On December 5, 2020, Heidegger was loaned to Bnei Herzliya of the Israeli Premier League.[14] He averaged 18.2 points, 2.0 rebounds, and 2.6 assists per game.
EWE Baskets Oldenburg (2021–2022)
On July 9, 2021, Heidegger signed with EWE Baskets Oldenburg of the German Basketball Bundesliga.[15] In 26 German league games played, he averaged 18.3 points, 2.2 rebounds and 4.5 assists per game.
Heidegger is the son of Jami and Klaus Heidegger.[7] His father is an Austrian former alpine skier who finished second overall at the 1976–77 FIS Alpine Ski World Cup. He later became a successful entrepreneur in the United States.[24] Heidegger's parents owned the beauty brand Kiehl's before selling it to L'Oréal for an estimated $100 million to $150 million in 2000.[25] His mother has a lung disease.[7] Heidegger is Jewish.[13]