PERTH, AUSTRALIA - OCTOBER 26: Ashton Agar of the Warriors looks on while walking from the field at stumps during day two of the Sheffield Shield match between Western Australia and South Australia at the WACA on October 26, 2016 in Perth, Australia. (Photo by Paul Kane/Getty Images)

One of Australia's biggest assets in their 4-0 smashing of England in the Ashes was the constant chopping and changing of the side.

While they may have held the Ashes if they had kept the same bowling attack, the introduction of Michael Nesar, Jhye Richardson, Scott Boland and Usman Khawaja were keys in the Aussie victory.

Yes, these changes were mostly due to injury, but Australia should have learned the importance of being able to change the squad to try different things.

Only twelve players have played during Australia's tour of Pakistan.

As they headed into the third and final test, Former Australian wicket-keeper and vice-captain Brad Haddin was shocked that Australia didn't make a change.

Speaking to Fox Cricket on Monday, Hadden said “I would have gone a bit more (of an) aggressive approach. I would have left say Travis Head out, for example, for this one-off Test match, and played Ashton Agar.

“Runs haven’t been a problem, wickets are a premium, so the one thing that would have given us options, we could have moved (Alex) Carey up the order and Agar’s ready to go.”

Australian great Mark Waugh agreed with Haddins' analysis.

“I don’t mind that, you should be a selector Hads. That is an aggressive approach.

“Given the way the pitches have played, as ‘Hads’ said, batting hasn’t been a problem, and we know that Agar can handle the bat pretty well, he could bat at No.7 not a problem, it would have been tough on Travis Head, but I don’t mind that."

With the way it played out, the Australian side would wish they could go back in time and make the difficult decision. Head scored only 26 in the first innings, while Pakistan, who bought in Naseem Shah.

“I like the move,” Haddin said pre-match.

“I think it’s a really aggressive move to play the extra out and out fast bowler, you’ve got to take 20 wickets.

“That’s what we’ve found in this series is wickets are at a premium. They’ll get enough runs, they just need bowling options to find a way to take 20 wickets.”

Shah would go on to dismiss both Steve Smith and Head.