Fremantle superstar Nathan Fyfe has played the past month with a substantial chest injury that has required him to wear a protective vest to help him get through to a much-needed mid-season bye and rest.

WAtoday understands Fyfe has endured agonising pain with severe bruising high into his chest cavity since early last month.

The champion on-baller has been at the centre of constant speculation that his playing value and productivity has substantially declined this season on his return from a broken leg which saw him miss almost the entire 2016 season.

The 2015 Brownlow medallist's contract remains a priority for the Dockers, with Fyfe yet to announce whether he will re-sign with Fremantle beyond 2017.