Fremantle star Michael Walters has been reported for an incident late in the third quarter of the Dockers' clash with Melbourne on Saturday afternoon.

Walters was reported for headbutting, and gave away a free kick for the incident, only for Melbourne captain Nathan Jones to bump Walters and reverse the decision, leading to a Fremantle goal.

Walters has been in red hot form over the past month, and is arguably in Brownlow Medal contention.