Giddey played 449 games in the National Basketball League (NBL) for the Illawarra Hawks and Melbourne Tigers.
[1] Giddey's number 6 was retired by the Tigers and his jersey hangs in the rafters of John Cain Arena.
He ran the Community and School programs for the team under its new name Melbourne United.
[2] On 4 February 2022, Giddey was named as head coach of the Melbourne Tigers women's team for the 2022 NBL1 South season.
[1] Their son, Josh, played in the NBL for the Adelaide 36ers and was selected sixth in the 2021 NBA draft by the Oklahoma City Thunder.