It’s the “blind spot” that could derail Fremantle’s season.

The Dockers ended a winless JLT Community Series campaign with a 51-point thrashing at the hands of West Coast in Mandurah on Sunday.

And there was one obvious difference between the reigning premiers and their cross-town rivals, according to The West Australian chief football writer Mark Duffield.

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“West Coast were clean, crisp and clinical with the ball, and Fremantle were sloppy and fumbly,” Duffield said.

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“I still keep coming back to this, I think that skill execution is a blind spot at Fremantle. I think they need to do more work on it.”

Duffield has pointed the finger at Fremantle’s training methods, which he believes are far different to the Eagles.

“I only watch two teams train, West Coast practice skill to within an inch of their lives and Fremantle practice structure,” he said.

“The more you practice it (skill execution), the better you get at it. It doesn’t mean they turn into Peter Daicos or Dean Kemp overnight, but it does mean they get better.”

In this edition of Duff and Quarters, Duffield and The Sunday Times sports editor Glen Quartermain discuss: