GIANTS big man Rory Lobb will use the lessons learned from his clash with Collingwood's Brodie Grundy earlier this season to help him combat the game's other standout ruckman on Sunday.

Lobb's ability to limit the influence of Melbourne star Max Gawn at the MCG will be crucial if the GIANTS are to finish the regular season with a win that will snare them a home elimination final.

In any other season Grundy would be a lock to lead the ruck in the All Australian side, but such has been the dominance of Gawn, most experts are calling for both to be included in 2018's team of the season.

Despite Grundy's 20 possessions, 45 hit-outs, eight clearances and two goals, he couldn't help his side overcome GWS in round two.

It was a rough afternoon for Lobb, who racked up 11 clangers from his 15 disposals, but he told AFL.com.au that the battle with Grundy taught him plenty.

"I wasn't aggressive enough in the ruck contests that day and obviously he's a big, aggressive boy," he said.

"I didn't really do a pre-season, so I didn't get to train my ruck work much.

"I'm trying to learn as much as I can as I'm playing each week, and obviously the more I play there the better I'll go, but I'm still trying to work it all out."

The GIANT had his best game of the season the week he was thrust back into the No.1 ruck role following a season-ending ankle injury suffered by Dawson Simpson.

Lobb showed just how much he'd developed over the season when he got the better of Adelaide's Sam Jacobs in round 21.

He used his outstanding athleticism to work the Crow over, but was also imposing physically, and he knows it'll take an even bigger effort to get an edge over Gawn.

"His strength is obviously his hit-outs to advantage so if I can nullify that as much as possible it will go a long way towards us winning," Lobb said.

"But I still want to play my game and get around the ground as an extra midfielder and fly for my marks as much as possible.

"I'm pretty comfortable playing as a forward, so whenever I can get running and push forward, I feel like it helps me get into the game."

Lobb's contested marking has been a feature of his 71-game career so far, but his courageous effort to jump in front of teammate Phil Davis and Swans superstar Lance Franklin last week left him sore, and his co-captain unable to continue his duel with the Swan.

Davis is expected to be fit to take on the Demons and while Lobb admits the impact also left him sore, it won't stop him launching at the footy.

"It was a bit unlucky that Phil got taken out in the process, but you never know with those sorts of balls because you can't take a look to see who is coming, you just have to go," he said.