[3] In January 2018, Macdonald signed with the Kilsyth Cobras of the South East Australian Basketball League (SEABL).
[7] He made eight appearances in his first season and was part of the JackJumpers team that reached the 2022 NBL Grand Final series.
[1] Macdonald joined the North-West Tasmania Thunder for the 2022 NBL1 South season and averaged 17.7 points, 3.5 rebounds, 2.5 assists and 2.0 steals per game.
[10] He finished the season averaging 6.3 points, 2.0 rebounds and 1.5 assists in 21 minutes per game, proving himself a knockdown shooter and playmaker.
[11] Macdonald joined the Darwin Salties for the 2023 NBL1 North season[12] and averaged 14.7 points, 5.0 assists, 4.7 rebounds and 1.8 steals per game.
[11] He helped the JackJumpers reach the 2024 grand final series, where they defeated Melbourne United 3–2 to win the NBL championship.
[21] In 2016, Macdonald was a member of the Australian under 17 national team that finished seventh at the FIBA Under-17 World Championship in Spain.
[22] Macdonald made his debut for the Australian Boomers during the 2023 FIBA Basketball World Cup Asian qualifiers.