Prior to coaching, he played in Australia's National Basketball League (NBL).

Davidson played for the Townsville Crocodiles, Cairns Taipans, Hunter Pirates, Singapore Slingers and Adelaide 36ers over thirteen seasons, finishing his career with a 40.1 three-point shooting percentage.

[1] He was also a member of the Australia men's national basketball team when they claimed the gold medal in the 2006 Commonwealth Games in Melbourne.

After retiring from playing professional basketball, Davidson was named the head coach of the Premier League's West Adelaide Bearcats, and was also head coach of the Norwood Flames from 2011 to 2013.

He was named the national shooting coach and talent identification manager for Basketball Australia's High Performance program in 2013, a role he held until 2016.