Beau Webster backs Aussie selectors despite tough calls after putting England into a spin

SCG: Beau Webster admits he thought he was "as good as anyone" to play the first Test in Perth but like the last home series against India, he didn't get his chance until Sydney.

And once again, the all-rounder delivered in spades, finishing with 71 not out and taking three wickets with his off-spin on day four to send the final Ashes Test to an epic finale.

Webster who normally bowls medium pace was told to bowl spin during England's second innings. Frontline spinner Todd Murphy wasn't picked for this Test, leaving the Tasmanian as the main option alongside Travis Head.

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The all-rounder revealed post-match the plan was always for him to bowl spin in the second innings with assistance from Mitchell Starc's foot marks.

Webster's performance once again highlighted his importance to the side with his omission across the four Tests a tough call from the selectors.

"No doubt coming into the summer I thought I was as good as anyone to be in the eleven in Perth and the selectors picked the team that would win the Test and we did and full credit to them," he told media following play in Sydney.

"They made some calls over this series that haven't been too popular and here we are at 3-1 hopefully going 4-1 in the series.

"As much as every cricketer in the 15 wants to be in the eleven, there's always a couple of guys that are going to get left out and a couple of guys that might deserve it or might not, that's up to other people to judge but I've got full faith in the selectors.

"The message was you haven't really been dropped you just can't fit into this eleven at the moment which is a good strong sign of Australian cricket at the moment.

"We've got a very good core group of players and I'm competing against some pretty good cricketers in what I do to get into the eleven."

Webster being left out of the first four Tests is the hard luck story of the series.

The all-rounder constantly saved Australia in the West Indies but his only blight was not being able to score a century over his first six Tests.

Despite that, he said he didn't have a point to prove.

"It's a strong Australian side no doubt ... I was disappointed not to play, as is everyone outside the XI, but I knew I was trying to stay ready and if I got a chance in any of the Tests I was ready to go," Webster said.

"It certainly wasn't toys out of the cot and sooking around, it was be ready if a chance came and like last year it's come in the last Test and I've managed to do all right."