Charlie Dixon of the Power is tackled by Lachie Henderson of the Cats.
Charlie Dixon of the Power is tackled by Lachie Henderson of the Cats. TRACEY NEARMY

WATCH: Power star's brain fade proves costly as Cats nab win

A CONTENTIOUS play-on call against Charlie Dixon has overshadowed Geelong's hard-fought two-point win over Port Adelaide on Thursday night.

Dixon marked with the Power three points in front and with less than four minutes remaining in the final term and a goal would have likely sealed a famous victory for his team.

But the tall forward took too long to begin his run-up, with his 30 seconds to begin his set shot action expiring after taking a strong mark 35m out from goal.

Geelong players, including midfielder Mitch Duncan, were well aware of the situation but Dixon was oblivious.

The umpire called play-on as soon as Dixon's 30 seconds expired as he had not started his run-up, with television cameras clearly picking up the countdown on the Simonds Stadium scoreboard.

Duncan was one of the first to react and put pressure on Dixon, eventually forcing him to handball to teammate Justin Westhoff whose kick inside 50 went nowhere near the goals.

Shot clock beats Dixon: Geelong v Port Adelaide
Shot clock beats Dixon: Geelong v Port Adelaide

"I heard the umpire talk to him and he said 'you've got eight seconds left' and I looked up at the screen and saw it (the countdown) get to three and I was looking at the umpire waiting for him to throw his hands up (and call play on)," Duncan said.

"I just reacted as soon as the umpire put his hands up.

"I guess Charlie took a lot of time and I was lucky enough to read it quickly."

When asked whether Duncan noticed Dixon was oblivious to how much time he was taking, the Cats midfielder said: "Yeah a little bit I think.

"When I heard the umpire it cued my memory that he only had 30 seconds to take his shot and he had to start his run up within that 30 seconds.

James Parsons of the Cats (right) scores a goal during the Round 10 AFL match between the Geelong Cats and Port Adelaide at Simonds Stadium in Melbourne, Thursday, May 25, 2017. (AAP Image/Tracey Nearmy) NO ARCHIVING, EDITORIAL USE ONLY
James Parsons of the Cats (right) is congratulated by teammates after scoring a goal. TRACEY NEARMY

"I suppose watching a bit of footy over time has made me click."

Some have suggested Dixon may not have been able to hear the umpire because of the crowd noise given it was late in a close game but Duncan said he had no trouble hearing the umpire's warning.

"I could hear the umpire. I'm not sure if Charlie did or not but I certainly did," he said.

Duncan had no doubt the right decision was made.

"It was zero and he hadn't started his run-up," Duncan told Fox Footy post-match. "From what I know, that's play on."

Despite it proving extremely costly for his side, Port Adelaide coach Ken Hinkley conceded the umpire made the right decision.

"Time ran out," Hinkley said. "Unfortunately, they got it 100%, right on the dot.

"I don't think I have ever seen it before. But that does not matter. The umpires got it right."