Australia Post replaced the Dockers postmark on the 1 March 2007. It was identical to its previous replacement postmark from the AFL Centenary year. It included a new date roll.
In July 2020 on Stampboards a new Fremantle Postmark was seen as a cancellation of one of the new AFL Mystamps. It appeared crisper and sharper than the previous postmark (above) from 2007. It was dated 7 July 2020.
Strikes from the Fremantle Post Office showed that the postmark was 1 cm larger than the 2007 issue. The exact date of release is unknown. To my knowledge it is the only active AFL relevant mark.