Uncapped spinner Matthew Kuhnemann has been called up to the Australia squad ahead of the second Test against India in the absence of Mitchell Swepson.

Swepson, who did not feature in a crushing innings-and-132-run defeat in the first Test in Nagpur, has decided to fly home as his wife is due to give birth.

Left-arm tweaker Kuhnemann could make his Test debut at the age of 26 when the tourists set about trying to level the four-match series at the Arun Jaitley Stadium on Friday.

The 26-year-old, who made his ODI bow against Sri Lanka last June, has only played 13 first-class matches for Queensland but may get the nod in Delhi.

He said after playing for Queensland against Victoria in the Sheffield Shield: "I was just lucky enough that my passport was in my bag.

"I watched every day [of the first Test] just being such a fan. These series are so good to watch. Todd Murphy was exceptional and sort of watched how [Ravindra] Jadeja bowled. So just really excited to get over there.

"I was fortunate enough to stay with the Test guys and bowl to them in the nets in Sri Lanka so that's still pretty fresh in my memory. I learned heaps just being over there for a couple of months. If I got the opportunity I'd like to think I'd be okay."

India all-rounder Jadeja was named player of the match after taking 5-47 in the first innings and 2-34 as Australia were skittled out for only 91 on day three of a one-sided first Test, while he also made 70 with the bat.

The performance of spinner Murphy, who claimed 7-124 on debut, was one huge positive in a dismal start to the tourists' bid to win the Border-Gavaskar Trophy.

Australia skipper Pat Cummins has confirmed they will go in with an unchanged line-up for the series-deciding third Test against Pakistan in Lahore starting on Monday.

The tourists backed spinners Nathan Lyon and Mitchell Swepson despite both bowling in excess of 50 overs in the second innings of the second Test which ended in a draw on Wednesday.

Conditions are expected to be similar in Lahore as they were in the previous two Tests with Karachi and Rawalpindi, where only 42 wickets fell overall.

"We were really happy with how all 11 players went last Test," Cummins told reporters on Sunday.

"Everyone has pulled up really well. We gave them an extra couple of days to make sure everyone has come up good. But there's no injury worries, everyone is freshened up, so we're confident in the XI.

"Only having two quick bowlers, I think reverse swing is going to be a big factor and the way Starcy played last game was fantastic.

"It's always tough leaving out someone like Joshy [Josh Hazlewood], even Scotty Boland. But the class and the difference Starcy brings as a left-armer, a bit more air speed, we think that's the best chance to take 20 wickets."

Cummins added that he felt Australia could take the necessary 20 wickets needed to win the third Test, having created chances that were not taken in Karachi as Pakistan resolutely batted out more than 171 overs to hold on for a draw.

"I think what's been clear... is the way we've gone about it is the right way," he said. "I've been really happy with how everyone has gone about their work (and) the tactics. I think it's just a matter of taking those chances.

"Wickets are at a premium in this series so you can't afford to drop too many chances. We created more than 10 chances [in Karachi], we just unfortunately didn't take them, so that's going to be the challenge this week."

Australia Test captain Pat Cummins hailed his side's bowling but rued their inability to take chances after settling for another draw with Pakistan in the second Test.

The tourists were in the ascendancy throughout at the National Stadium in Karachi, having posted 556-9 in the first innings before bowling hosts Pakistan out for just 148.

Cummins opted to bat again as opposed to enforcing the follow-on for Babar Azam's Pakistan, who were set a mammoth 506 to win or to bat just under two days to secure the draw.

Led by captain Babar, who batted over 10 hours for his 425-ball 196, Pakistan decided on the latter option and their star batter was aided by Abdullah Shafique (96) and Mohammad Rizwan (104 not out).

Nathan Lyon spurred Australia to battle until the end with two wickets in two balls, dismissing Faheem Ashraf and Sajid Khan, but Pakistan held on for a famous draw.

It could have been a different result, though, given Steve Smith shelled Shafique late on day four and Usman Khawaja dropped Rizwan with three overs of play remaining on day five.

"I think the positive thing is each time we've created more than 10 chances," Cummins said. "It's probably the disappointing thing this game as well.

"If we took a couple of those catches it might be a different scenario. I walked off the field at the end of the day's play without feeling there was something I hadn't tried, or there wasn't a plan we hadn't given a really good chance at.

"In foreign conditions, we are showing that we are able to adapt and play well over here. But of course, getting so close, [being] so far ahead of the game, and not coming away with the result can feel like it's a missed opportunity."

Debutant Swepson finished with figures of 0-156 in the second innings from his 53.4 overs, but Cummins heaped praise on the spinner, along with his partner Nathan Lyon.

"I thought Swepo bowled fantastically," Cummins said. "I don't know how he's ended up with those figures. Especially that middle session, he had an umpire's call, a couple of half-chances dropped off his bowling, lots of plays and misses.

"The way he was able to be a real wicket-taking option on a really good wicket without really footmarks to the right-handers I was just really impressed with how he went about it.

"Nathan, I thought he bowled well, particularly today. Felt like he was going to get a wicket every over. When I took off him to bowl Starcy or myself, it was a hard decision to make because felt like he was so close to a wicket all day."

Asked whether he left enough time to win the Test, leaving five-and-a-half sessions to dismiss Pakistan, Cummins responded: "Overall I wouldn't change too much to do honest. 

"Batting into day three gave us that chance to really have a crack at them – probably went better than we could have expected – but over here the wickets are pretty good.

"We tried to bat two-and-a-half days on the best time of the wicket, hoping that it would break up on day four and five and it held together pretty well.

"Babar, Rizwan, Shafique, thought they all batted fantastically the last two days. We knew the wicket wasn't playing too many tricks but they batted superbly and made it really hard to get that breakthrough and when we did the next guy stuck at it as well.

"The good thing is it's nil-all, we didn't lose anything. Coming over here in these conditions, at the start of the series if you'd said it was going to be nil-all after two games you'd probably take that."

Australia will look to seal a series victory in the winner-takes-all decider that starts in Lahore on Monday.

Mitchell Starc struck three times as Australia put themselves in a great position to win the second Test against Pakistan on day three at the National Stadium.

Pat Cummins declared with the tourists 556-9 in Karachi on Monday, their third-highest total in Pakistan.

Starc took 3-29 and Mitchell Swepson claimed 2-32 as the hosts were skittled out for 148 in reply.

Captain Babar Azam top scored with 36 in a dismal effort from Pakistan with the bat and Australia were 81-1 at stumps, leading by a mammoth 489 runs and scenting a 1-0 lead in the three-match series after Cummins opted against enforcing the follow-on.

Shaheen Shah Afridi dismissed Starc with the second ball of the day, but Cummins and Swepson put on 51 in quick time for the last wicket.

Swepson ran Abdullah Shafique out to end an opening stand of 26 and Pakistan collapsed from 60-2, losing six wickets in the afternoon session.

Babar fell to Swepson when he gave the spinner the charge and could only pick out Usman Khawaja in the deep as Pakistan crumbled to 118-9.

Nauman Ali (20 not out) and Afridi (19) produced a final-wicket stand of 30 before Swepson removed the left-arm paceman.

Hasan Ali saw the back of David Warner for only seven after Cummins elected to bat again, but the in-form Khawaja (35no) and Marnus Labuschagne (37no) combined for an unbroken partnership of 61 to extend Australia's huge lead.

Starc swings Australia into complete control

With Pakistan weary after so long in the field, Starc conjured up some swing to strengthen Australia's grip on the match.

The left-arm paceman had Azhar Ali caught by Cameron Green at second slip for only 14 and followed that up by trapping Fawad Alam leg before from the next delivery.

Starc also removed Sajid Khan, caught by wicketkeeper Alex Carey, as the tourists ripped through Pakistan.

Swepson makes his mark

Spinner Swepson had a long time to wait for his Test debut, having first been called up five years ago.

The tweaker made an unbeaten 15 in an unbroken final-wicket stand with Cummins of 51, before running Shafique out.

Swepson then made Babar his first Test scalp when the Pakistan captain was taken by Khawaja in the deep and finished the innings by snaring Afridi leg before wicket.

Mitchell Swepson will make his Test debut when Australia face Pakistan at the National Stadium.

Australia captain Pat Cummins on Friday confirmed leg-spinner Swepson will make his Test bow at the PCA Stadium five years after he was first called up.

"He's pumped and to be honest, we're all pumped for Swepo," Australia captain Cummins said.

"It's been a long time running drinks over the last couple of years, but he's absolutely ready.

"He's been a huge part of the squad, even though he hasn't been playing. So we're really excited to see him get a chance.

"The wicket here is a little bit drier and historically a bit friendlier for the spinners."

Australia only took four wickets in the match as the first Test at Rawalpindi Cricket Stadium drifted into a draw.

Pat Cummins says Mitchell Swepson could finally make his debut when Australia face Pakistan in the second Test in Karachi.

Swepson earned a first call-up in 2017 but has not yet played for his country in the longest format.

The leg-spinner may get a long-awaited chance at the National Stadium after Australia only took four wickets in a drawn series-opening run-fest at Rawalpindi Cricket Stadium.

When asked if Swepson will come into the team, captain Cummins said: "Potentially. I think we'll have a look before making up our mind.

"I think it is an asset for sure having a wrist spinner. It's something a bit different, and Sweppo has been bowling beautifully. We'll get to Karachi and have a look. But absolutely, Sweppo as a wrist spinner is a huge chance if we play two."

Cummins stated that he felt the wicket in Rawalpindi had been produced with the aim of nullifying the tourists' pace attack.

The fast bowler says Australia potentially should have gone with two spinners for first Test but does not believe the result would have been different if they had.

"I think it may have been helpful [in Rawalpindi], but I don't think it would have made too much of a difference," he said.

"Here you probably expected more up-and-down bounce and reverse swing, which lends more support to the fast bowlers rather than spinners.

"Our intel from Karachi and Lahore says a second spinner is probably the way to go. But we'll have a look."

The second Test gets under way on Friday.