Quick Read
- Mason Cox has joined the Fremantle Dockers following a long tenure with the Collingwood Magpies.
- The veteran player is currently focused on match fitness while praising the impact of teammates Shai Bolton and Josh Treacy.
- Fremantle’s ability to integrate these high-profile recruits remains a focal point for their 2026 premiership aspirations.
Mason Cox has officially transitioned into a new chapter of his AFL career, trading the black and white stripes of Collingwood for the purple of the Fremantle Dockers. After 139 games with the Magpies, the 211cm American-born ruck-forward is navigating the complexities of a new system while assessing the high-octane talent currently driving Fremantle’s 2026 campaign.
Adapting to the Fremantle Dockers’ offensive dynamic
The move, which finalized during the off-season, has placed Cox in a unique position as he integrates into a forward line led by the surging Josh Treacy. While Cox is yet to make his senior debut for the Dockers, his influence is already felt in the culture of the team. He recently lauded the performance of teammate Shai Bolton, who joined the Dockers from Richmond in a high-profile 2024 trade. Cox described the playmaker as an absolute freak, noting that even from the sidelines, Bolton’s creativity has been a revelation for the group.
The aerial dominance of Josh Treacy
Beyond the flair provided by Bolton, the Dockers have found a reliable focal point in Josh Treacy. The 23-year-old key forward has emerged as the competition’s most statistically dominant aerial threat through four rounds of the 2026 season. Cox, speaking on the Red Time podcast, described Treacy as a train that defenders struggle to contain, highlighting his vice-like grip and ability to impact the game in challenging conditions. The chemistry developing between these recruits and the established core is considered a critical factor for Fremantle as they aim to solidify their standing in the premiership race.
Life after Collingwood
The departure of Cox from Collingwood has been a point of discussion among his former teammates. Magpies vice-captain Brayden Maynard recently expressed that the loss of veteran experience, including both Cox and Brody Mihocek, has forced Craig McRae’s side to rethink their scoring structure. While Collingwood struggles with forward-line efficiency in the early stages of 2026, Cox remains focused on his role in Western Australia. His recent inclusion in the WAFL side for Peel Thunder signifies his commitment to maintaining match fitness as he waits for his opportunity to break into Justin Longmuir’s best 23.
The strategic integration of high-profile recruits like Cox into the Dockers’ lineup represents a high-stakes gamble for Fremantle; the club’s ability to balance the raw, creative talent of players like Bolton with the established aerial dominance of Treacy will determine whether they can translate early-season promise into a genuine premiership challenge.

