Superstar recruit Greg Inglis admits his form is scratchy and he needs to find his best to help reverse South Sydney's ugly start to the NRL season.

Despite being the pre-season second favourites, Souths slumped to defeat in their opening two games, with Canterbury coming from behind to see off the Rabbitohs 28-19 on Sunday.

Inglis had off-season shoulder and hip surgery and looked rusty in the opening two games, but the Test and Origin centre is confident his best form is not too far away.

"I admit my own form has been a bit scratchy, no doubt about that, my fitness is underdone," said Inglis on Monday.

"I am not looking for excuses, it's just a case of getting down and doing my homework and making sure I am fit to play every week.

"I am not 100 per cent ... I am 90 per cent, it will take a few weeks to get into it, but I have to make sure I am fine and ready to play.

"But at the end of the day, it's a team job across the field from 1-17 and everyone has to play their part and do their job."

Inglis revealed John Lang refused to put the boot into his players behind closed doors after the loss to Canterbury.

The veteran coach was filmed exploding with rage following his side's first-half performance against Sydney Roosters in the season-opener, but Inglis said he was in a more reflective mood this time.

"Langy was pretty quiet after the game. It was more of a heart to heart," said Inglis.

"At halftime we were going well, but after the game what he said was more subtle," Inglis said.

The Queensland superstar, who snubbed Brisbane for a move to the Rabbitohs, said he was unsure what they were doing wrong.

"We had the two games we've played in the bag, we just let them slip," he said.

"I don't know if it is a team thing or individually, but I am 100 per cent confident Langy and the coaching staff will go back and have a look at it this week and we will be right to face Parramatta.

"We're very confident we can turn it around, we've had a couple of hiccups over the last few weeks but nothing we can't turn around."

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