Dockers coach Ross Lyon has come to the defence of AFL umpires despite a contentious no-call on Crow Eddie Betts potentially costing Fremantle a win last weekend.

Speaking to Basil Zempilas on 7NEWS from the Dockers’ Cockburn headquarters, Lyon says it is not his style to confront the whistleblowers.

“The reality is I think twice, maybe three times (in my coaching career), I’ve sent some queries in,” Lyon said.

“The umpires have an incredibly hard job.

“(There were) more areas on our end (than the no-call) we could have taken control of and won the game.”

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Lyon even had a dig at the female parent who was filmed in a shocking encounter with a 13-year-old umpire at an Under 11s match in Thornlie over the weekend.

“We are all ambassadors for the AFL and umpires, and when you hear what’s happening out in the community sometimes… it’s not very palatable,” he said.

Lyon said the Dockers had moved on from the low-scoring contest with the Crows, taking plenty of positives from the tight loss.

“We were really strong in the contest,” he said.

“It was a bruising encounter.

“It was a real slugfest but we would have liked to have scored more like we have all year.”

Dockers fans were dismayed when play was allowed to continue in the match when it appeared Crow Eddie Betts was caught holding the ball.

The passage of play ended up in a goal for the Crows - which were hard to come by in the low-scoring contest.

Fremantle will take on an injury-hit Richmond at home on Sunday.

The Tigers will be without stars Trent Cotchin, Alex Rance and Jack Riewoldt and could also be missing defenders David Astbury and Nick Vlastuin and forward Daniel Rioli.