Todd Murphy is firming to play his first home Test, after the SCG's head curator declared the pitch's green exterior will be near-irrelevant come day one.

With administrators still on edge after last week's two-day debacle in Melbourne, an extremely green SCG square raised eyebrows in Sydney on Thursday.

But chief curator Adam Lewis insisted on Friday that it should not be a concern, and he was hopeful Sydney would extend into a fifth day.

"You want to see a green tinge three days out," Lewis said.

"If you're not seeing any live grass three days out, then that's when [it's a worry] … I'm really comfortable with where we're sitting.

"We had a little bit of sun this morning. They're saying a bit more sun tomorrow.

"That will take the greenness out of the pitch. We're really happy with the pitches at the moment. We're looking good."

The SCG centre wicket having a green tinge to it has sparked concerns over another short Test match. (Getty Images: Darrian Traynor)

Lewis admitted he felt for MCG counterpart Matt Page last week after his pitch was deemed "unsatisfactory" by the ICC, but said he felt no external pressure to ensure the fifth Test in Sydney went the distance.

It's estimated that Cricket Australia has lost in the vicinity of $15 million in profits this summer, with the opening Test in Perth also finishing inside two days.

Even Prime Minister Anthony Albanese joked at a function with teams on Thursday night that they had to ensure the game went to day three, in order to support the McGrath Foundation fundraiser.

One of the hardest grounds in the world to bowl on between 2014 and 2023, last year's SCG Test was over in just two-and-a-half days.

Last year's Sydney Test finished inside three days as both Australia and India struggled on the playing surface. (Getty Images: SOPA Images/Lightrocket/Ayush Kumar)

Lewis said that his ground staff would go with 6mm of grass this year compared to 7mm last season, while also reducing its density.

That in itself generally acts to flatten out the wicket and produce less movement, while also inviting the chance of spin late in the match.

"We just thought … we could thin our density out a little bit," Lewis said.

"That's what we've done this year. We've practised that in the Shield matches, and we've received very good marks."

All of which should spell good news for Murphy.

Australia's coaching staff had a prolonged conversation around the pitch on Friday morning, after leaving Murphy out and going with four quicks at the MCG.

The spinner then spent most of Friday's training session bowling to Australia's top order, while Alex Carey also had an extended run keeping to him.

With seven Tests to his name overseas, Murphy would be expected to come in for Jhye Richardson if he did play in Sydney.

The other question for Australia will be whether Cameron Green remains in the side, after Beau Webster was spotted fielding in the gully during slips training on Friday.

Meanwhile, Cricket Australia CEO Todd Greenberg said he too was confident the SCG Test would last the distance.

"I've had more phone calls and conversations about wickets and millimetres of grass than I thought I'd ever have," Greenberg said.

"But I'm hopeful and confident we will have a long and productive Test match here."

AAP

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