FREMANTLE'S midfield issues are only minor and can be fixed quickly, according to on-baller David Mundy, as the 5-4 team looks to rebound from a horror fortnight against Adelaide on Saturday.

Coach Ross Lyon and his players have come under fire following a midfield demolition at the hands of West Coast last Sunday, which resulted in the club's lowest score - 5.6 (36) - on home turf in 18 seasons.   

Mundy, who conceded he is still below full fitness after recovering from a serious ankle injury, said this week's match review had revealed the need for "minor adjustments to what we already know and what we already do".

"We’re pretty confident that they can be implemented ASAP," the 26-year-old said on Tuesday, ahead of his 150th game. 

"It's just some minor tweaks and changes to our systems. We're fairly confident we can get it right pretty quickly.

"I think we've seen already this year signs that when we do get it right and when we play how we want to play, we can be a very damaging and effective side.

"I have no doubt that our game plan as it stands is the right way for us to play. It's just a matter of us getting that right each week and each quarter."

Click here to view Mundy's career stats

Fremantle was dominated in the midfield against West Coast, losing the uncontested possession count by 108, and the inside 50s 64-30.

Lyon's players did not win a clearance in the third quarter and Mundy said he had been frustrated by his inability to play longer minutes on-ball as he builds fitness following an interrupted pre-season.

"To be hurt in the stoppages and around the midfield is a slap in the face to me and 'Spider' (Aaron Sandilands) and the other guys in there," the clearance specialist said. 

"It's an area that we're really heavily focusing on and trying to improve as quickly as we can.

"Individually it's been quite a frustrating start to the year for me, not being able to do what I like to do and what I know I'm capable of.

"Before the injury I'd had six or seven uninterrupted pre-seasons behind me, so being on crutches for three months hurts that."

Mundy, who has spent time playing across half-back this season, said his GPS results suggested he was pushing towards full fitness and he was now confident he could run games out.  

The 2010 club champion will be joined for his milestone game by Paul Duffield, who makes his 100th senior appearance after graduating from the rookie list.

Mundy, who hails from Victoria, played 124 consecutive games after making his debut in 2005 and signed a four-year contract extension with Fremantle at the end of 2010. 

"I'm really proud to play my whole career to date at Fremantle," he said.

Nathan Schmook covers Fremantle news for AFL.com.au. Follow him on Twitter: @AFL_Nathan