In his debut match at age 20 for St Kilda in Round 11 1993 he had 25 touches and earned an AFL Rising Star nomination and two Brownlow Medal votes, but was dropped after one more match despite being among the best once more. In a shock decision, he was delisted at the end of the season.
Atkinson returned to North Adelaide and played from 1994 to 1996, before moving to Sturt in 1997. Atkinson would play 98 games and kick 112 goals for North.
After a standout season in 1997 for Sturt, Atkinson was joint winner of the Magarey Medal, awarded for the best and fairest player in the SANFL competition. Atkinson shared the award with Andrew Jarman.
In an interesting turn on events he was selected in the 1998 AFL Draft by Adelaide after trading Chad Rintoul to West Coast for pick 80. At age 26, and out of AFL for several years, his SANFL form with the Sturt Football Club was enough to get him re-drafted. Hampered by groin injuries, he played only five games in 1999 before being delisted once again.
He continued to play for Sturt, primarily as a midfielder until 2002, when he moved to the forward pocket. In his 124th and last game for the club they won the 2002 SANFL Grand Final over Central District.
On 24 October 2000, Atkinson was awarded the Australian Sports Medal for being a recipient of the highest individual honour in South Australian Football.[4]