GWS Giants flog Port Adelaide Power at Manuka Oval

Greater Western Sydney coach Leon Cameron says ruck-duo Shane Mumford and Rory Lobb are emerging as a "lethal combination" after they led the way in an emphatic 86-point victory over Port Adelaide at Manuka Oval on Sunday.

Lobb kicked four goals, his personal best, while Mumford dominated the ruck to help set up the 22.19 (151) to 9.11 (65) triumph to honour defender Joel Patfull's 200th AFL game.

It was the Giants' biggest winning margin and highest ever score as they blacked out the Power all across the field.

The fall-out could get worse for Port, with Charlie Dixon reported for striking GWS co-captain Phil Davis in the fourth quarter and Robbie Gray punching Davis's counterpart Callan Ward in the stomach just before half-time.

The Giants out worked the Power all over the ground as Lobb produced his best return to announce himself as a handy foil alongside Jon Patton and the returning Jeremy Cameron (suspension).

Mumford (28 hit outs) was a monster in the ruck, especially in the first half, enabling his midfield to run rampant all over the ground.

GWS started brilliantly, smothering Port in the opening 15 minutes to shoot out to a 21-point lead.

Apart from a brief fightback after that, which included Chad Wingard's only two goals, it was all Giants.

Like last season, they face questions over their legitimacy as a finals contender which has been built on the back of their 2014 performances.

A 23-point quarter-time lead grew to 61 by the main break and then 66 at three quarter-time.

"They're very hard to find ruck-forwards and also forward-rucks. As the journey goes on for Rory he'll spend more and more time in the ruck and Mummy will spend more time forward," Cameron said.

"The two of them hopefully become a really good lethal combination. As you go along the backbone to your side, if you keep progressing up the ladder, is off the back of some really good talls down the spine and hopefully Rory and Mummy can continue on."

Tempers flared at half-time - Ward took exception to Gray's stomach punch and he let the Port onballer know as the teams headed to the race.

The blow left him winded, but the GWS co-captain made a point of standing up to a team the young club feels has bullied them in the past.

Cameron said it was a sign his team had become men and the time when the rest of the competition could beat up on them was over.

"It;s a man's game and we're men. We're five years in, we're men, our average age is 24 most weeks now," He said.

"We've got some good mature players that help our lads out, we're men, and there's days you're going to get beaten, there's days you're going to win, but you've got to make sure when you do get beaten you go down fighting.

"Gone are those days ... that we would concede. Our leaders led the way."

Ward kicked the Giant's opening goal of the game and he burst out of the middle in the third quarter to kick his second - a long running goal.

He's continuing his journey towards being considered one of the AFL's elite midfielders.

Many would have thought the Port midfield would have too much class for the Giants, but they were completely out worked.

Coniglio kept Port skipper Travis Boak quiet, while getting plenty of the ball himself (34 possessions).

Dylan Shiel (31) and winger Lachie Whitfield also provided plenty of run, while Toby Greene worked tirelessly and with better finishing could've had more than his one goal.

Westhoff (21 possessions) was one of the few Power players who could hold his head high in the first half and Jasper Pittard's 33 disposals was their biggest return.

Port coach Ken Hinkley rated it as the club's worse loss since he took over the helm in 2013.

"Is it our worst performance? I don't know that I want to separate both performances three weeks' apart. We were equally as bad," he said.

Port now have to host an in-form Geelong at Adelaide Oval next week, while the Giants travel to Melbourne to take on another emerging young side in St Kilda.