Wicketkeeper Matt Prior is one of several England players who must ask themselves if they're worth a Test place, says Nasser Hussain.
Prior missed two stumping chances to dismiss David Warner on day three of the third Test in Perth and the opener took advantage, scoring a century to help Australia to 235-3 in their second innings - a total that means they lead the tourists by 369 runs.
Since becoming the first wicketkeeper to be named England Cricketer of the Year in May, Prior has struggled for form averaging 19 in this summer's 3-0 Ashes win and scoring just 81 runs at an average of 16.20 in the current series.
Former captain Hussain told the Sky Sports Ashes Podcast that he is not in favour of making wholesale changes but admits that unless England improve significantly, new blood will be introduced.
"You are always a better player when you are out of the side," said Hussain. "I'd like the same people [who want changes] to say who they would bring in.
"Is there a better player than Alastair Cook out there at the moment? Is there a better player out there than Kevin Pietersen or Ian Bell?
"Ben Stokes has done well. We've seen him dismiss Michael Clarke late on in the day. Let's not throw everyone away because we've had three bad Tests in a row.
"Matt Prior is going to have to have a good, long look at himself. I know he got fifty in Adelaide but he's not got many runs for the best part of a year and his keeping was pretty ordinary this afternoon.
"Often the keeper is the barometer of where you are as a side so Prior definitely needs to up his game. But I'm not one for wholesale changes. I'm more for looking at yourself.
"Each player has to ask themselves 'am I doing enough to stay in this side. Can I fight for the next two days, even in a losing cause, to show Australia that we are going to fight for these Ashes. If we don't, we are going to give it back to them.'
"You only get a break in Test cricket when you are left out, as far as I'm concerned. They've all got one more innings to put things right. I'd give them that innings and then make a decision at the end of it.
"I'm not one for wholesale changes. You look at when we've been most successful - we were very consistent with our selection. Now is not the time to be axing left, right and centre but at some stage you have to introduce new blood.
"The Ashes are not gone. There is still a chance and while there's a chance there's hope. Second time around some of these guys might be playing for their places. They need to get their heads down and get some runs."
England's hopes of retaining the urn suffered another blow on day three in Perth when they lost six wickets for just 71 runs to concede their third first-innings deficit in as many Tests.
Hussain said the team paid the price for being over-cautious at the crease.
"I know some of them were out yesterday but we're talking about some of the great names of English cricket - Cook, Pietersen and Bell. To get 251 on a flat pitch was just not good enough, to be honest.
"It's almost as if they almost went completely into their shell. Probably rightly, someone has said 'make sure you don't give your wicket away, make sure the bowler has to do something special to get you out after what happened at Adelaide.
"But they've gone from one extreme to another. After being 80-1, they all just went into their shell."
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Watch highlights of today's play on Sky Sports 2. Our coverage of day three of the third Test begins at 2.25am on Sunday morning.