In 2014, Petrušev, already over 2.00 meters in height, who had just completed the seventh grade of primary school in Serbia, signed for the youth system of Spanish club Saski Baskonia (Laboral Kutxa). Moving away from home to Vitoria-Gasteiz in the Basque Country, the fourteen-year-old began living a structured life within the club's youth system: residing with other youth team foreign players in a club-provided house with a cook, attending school classes in the morning, and participating in basketball training sessions in the afternoon. In accordance with the club's training methods, in addition to team practices, he spent a lot of time on daily individual work—honing footwork in the post and practicing the hook shot—with coach Iñaki Iriarte [es].[2]
As per the advice and wishes of his family, he decided to leave Saski Baskonia during summer 2016 at age sixteen once the club wanted him to turn professional, which was to entail stopping his formal education, devoting his time fully to basketball, and likely being sent out on loans to smaller Spanish clubs in pursuit of making the full squad at Baskonia.[3] Summarizing his two year stay in Spain, Petrušev described it as "essentially becoming a semi-professional at fourteen" while crediting it for "significant personal growth".[4]
Not keen on stopping his secondary education as part of turning professional, Petrušev began looking for a way to continue his schooling while simultaneously pursuing basketball.[2]
U.S. high schools
After making the Serbia under-16 national team for the 2016 U16 European Championship where he appeared alongside youth prospects Alen Smailagić, Dalibor Ilić, and Marko Pecarski, sixteen-year-old Petrušev began playing high school basketball in the United States with Avon Old Farms, an all-boys boarding school in Avon, Connecticut.[5] Arriving in Connecticut with a foot injury he had picked up at the European under-16 Championship, Petrušev missed the majority of the season, watching the games from the bench and reportedly being disappointed with the style of basketball played at Avon, specifically its run-and-gun nature and disorganized structure.[2] Once he finally got on the court, though, he quickly adapted to the different style of play, eventually growing to appreciate its faster pace, focus on athleticism as well as being able to stretch the floor, shoot the three, and have the ball in his hands more, none of which he had been exposed to at Baskonia or Serbia under-16 national team.[2]
In August 2017, he attended the Basketball Without Borders Europe Camp 16 in Netanya, Israel.[7] Playing on a roster led by the number 1 prospect in the country RJ Barrett as well as top recruits Andrew Nembhard and Michael Devoe, Petrušev immediately gained the trust of the team's head coach Kevin Boyle who envisioned the 6' 11" (2.11 m) Serbian as a modern big (power forward or center) who could shoot threes and set himself apart as an inside-outside player.[2] Adjudged to be too thin, the player was simultaneously put through a physical regiment to bulk up.[2] Petrušev attended Basketball Without Borders Global Camp in El Segundo, California in February 2018.[8]
U.S. college recruiting
Petrušev was a consensus four-star recruit, according to major recruiting services. He originally committed to the University of Hartford on October 24, 2016, but later de-committed on July 26, 2017. On October 22, 2017, he announced his commitment to Gonzaga. On November 8, 2017, Petrušev signed a letter of intent with the Gonzaga Bulldogs.[9][10]
As a freshman, Petrušev averaged 6.5 points and 2.7 rebounds per game and was named to the West Coast Conference (WCC) All-Freshman Team.[11] He scored a career-high 25 points in a 110–60 win over Arkansas–Pine Bluff on November 9, 2019.[12] On December 21, Petrušev had 24 points and nine rebounds in a 112–77 win over Eastern Washington.[13] He was named to the midseason watchlist for the Wooden Award.[14] Petrušev went down with an ankle injury in the second half of a game against BYU on January 18, 2020.[15] At the conclusion of the regular season, Petrušev was named WCC player of the year.[16] He averaged 17.5 points and eight rebounds per game.[17] Following the season Petrušev declared for the 2020 NBA draft.[18] Later, he withdrew his name from consideration for the 2020 NBA draft.
In August 2021, having been drafted by the team earlier in the summer, Petrušev joined the Philadelphia 76ers for the NBA Summer League.[23][24] On August 9, 2021, he made his debut in the Summer League in a 95–73 win against the Dallas Mavericks in which he posted 5 points, 4 rebounds, and 3 blocks in 19 minutes.[25][26][27]
Joining the accomplished squad led by a duo of guards Shane Larkin and Petrušev's Serbian compatriot Vasilije Micić, Petrušev started out well in the EuroLeague opening game loss away at Real Madrid, his EuroLeague debut, with 17 points in 16 minutes of action on 6 of 8 field goal shooting.[30] He had a few more solid outings during the first half of the season that saw the defending champions Efes struggle with a 0–4 start before finally recording a win in week 5 at home to the Russian club UNICS. The team's struggles continued the rest of fall 2021 with a disappointing 9–9 record at the end of December 2021 just past the halfway point of the regular season.
Petrušev’s role diminished in the second half of the EuroLeague regular season as Efes' veteran centers Tibor Pleiß and Bryant Dunston rolled into form and head coach Ergin Ataman generally began relying more on the veterans that carried Efes the season before.[31] After not getting a single minute of action in the playoffs quarterfinal best-of-five series versus Olimpia Milano, Petrušev also had no playing time at the Final Four in Belgrade as Efes successfully defended their EuroLeague title.
Crvena zvezda (2022–2023)
After answering the Serbian national team call-up for two qualification games as part of the team's World Cup third qualification window in late June and early July 2022 (and appearing only in the first game away at Latvia with no points and 10 rebounds),[32] Petrušev joined the Philadelphia 76ers in its Summer League participation in Las Vegas for the second year running later that month.[33] Expressing desire to join the Sixers right away,[34] he appeared in 4 Summer League games for the team, averaging 5.5 points and 2.3 rebounds.[35] He was not signed by the Sixers as he was deemed to still not be physically ready for the NBA.[35][36]
On July 19, 2022, Petrušev signed a contract with his hometown club Crvena zvezda.[37][38] The move meant a return to Crvena zvezda for Petrušev as he had played within the club's youth system prior to 2014.[1] In 34 EuroLeague games, he averaged 10.7 points and 5.2 rebounds in 23 minutes per contest.
Philadelphia 76ers (2023)
On May 3, 2021, Petrušev declared for the 2021 NBA draft.[39] Petrušev was selected with the 50th overall pick by the Philadelphia 76ers in the 2021 NBA Draft.[40] Following the draft, Petrušev remained in Europe.[41][42]
Petrušev made not only his NBA debut, but also played in what became his only game with the 76ers on October 29, 2023, grabbing only one rebound in two minutes and 41 seconds of action that resulted in a 126–98 blowout win over the Portland Trail Blazers.[44]
Petrušev was a member of the Serbian national under-18 basketball teams that won the gold medals at the 2017 Championship and the 2018 FIBA Europe Under-18 Championship. Over seven tournament games in 2017, he averaged 5.3 points and 3.4 rebounds per game.[51][52] In 2018, he averaged 21.0 points, 8.7 rebounds and 3.1 assists per game over seven tournament games.[53] Petrušev had 29 points, 8 rebounds and 3 assists in the Final. At the tournament's end, he finished third in scoring and rebounds and got selected to the All-Tournament Team.[54]