As tension intensified at the MCG, Australia’s middle order failed again, India’s young Jaiswal dropped three catches and Pat Cummins wanted the third umpire to review a decision made by the third umpire.

Here are the quick hits from day four of the fourth Test between Australia and India.

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1. Cummins tries to review a review

There was early drama to open day four when the Aussies thought they’d dismissed Mohammed Siraj caught in the slips.

Siraj nicked a yorker-length Cummins ball to Steve Smith in the slips, but the umpires wanted to check whether the ball had bounced off the edge of the bat onto the turf before bouncing up to Smith.

Replays showed that the ball had virtually made contact with Siraj’s bat and the pitch simultaneously, before squirting up to Smith.

On the ground, the Aussie players saw the first replay and thought it was conclusively out and began walking off to prepare for their batting innings, only to be stunned when a not out call came from the third umpire.

Cummins was in disbelief at the decision and attempted to review the review decision, repeatedly making the “T” symbol with his hands towards the umpires, but to no avail.

The Aussies could not believe the third umpire had not assessed any of the other available camera angles before coming to the decision.

Luckily for Australia, the controversial call didn’t prove too costly, with Nitish Kumar Reddy caught on the boundary three balls later to end India’s innings 105 runs short of Australia’s first innings total of 474.

2. Bumrah gives Konstas a taste of his own medicine

If you needed any further evidence of Sam Konstas getting under India’s skin, his dismissal on day four provided it.

Konstas’s second Test innings was far less exciting than his first, with the opener looking extremely scratchy during an 18-ball stay that yielded eight runs.

Konstas was sent packing courtesy of a terrific delivery from Jasprit Bumrah, which snaked into his pads and rocked his middle stump.

Bumrah’s celebration was epic — he turned towards the Bharat Army in his follow through and urged them to get up and about by signalling to them by lifting both his arms up.

It was a clear imitation of Konstas having fun with the crowd throughout the first three days of this Test.

During his innings on day one, Konstas motioned to the Aussie fans to get up and about after he scored his half-century.

He did the same on numerous occasions in the field, with both Australia and India’s fans, and it seems the acts did not go unnoticed in the Indian dressing room.

Bumrah isn’t usually a fiery customer, but the fact he reacted like he did shows Konstas is well and truly on the Indian champion’s radar.

3. Australia collapses in the middle session

The match was poised on a knife’s edge after lunch when Australia came out to bat with Steve Smith and Marnus Labuschagne at the crease.

Australia operated at a run rate just a hair over two runs per over in the morning session, and it left the batters in an awkward position.

Smith, Labuschagne and Australia’s other middle-order bats needed to not only remain at the crease, but score at a fast enough rate to allow a potential declaration to give the bowlers enough time to bowl India out in the second innings.

As it turned out, neither of these occurred.

Smith found himself caught behind for 13 after going for an ugly hack off Siraj on the off side and it sparked a collapse that breathed life into India.

Rohit Sharma immediately brought Jasprit Bumrah back into the attack and Bumrah responded by removing Travis Head and Mitch Marsh — two players capable of upping the run rate — in the space of four deliveries.

If that wasn’t enough, Bumrah added the wicket of Alex Carey a few overs later with a contender for ball of the Test match.

At that point, his figures for the spell read: 2-0-4-3.

4. Jaiswal drops three chances that cost India 63 runs

One of the key moments from Brisbane was Steve Smith dropping KL Rahul off the first ball of the fourth day.

Rahul went on to add 41 more runs to his score, and more importantly, help India avoid the follow-on and give Australia no chance of winning the rain-affected Test.

Fast forward to Melbourne, and two drops on day four could be looked back upon as a key moment in deciding the nail-biting Test.

Poor Yashasvi Jaiswal put down a pair of chances that really should have been taken at Test level.

The first was Usman Khawaja, who had scored two off eight balls when he was given a straight delivery which he whipped off his pads straight to Jaiswal at leg gully.

Jaiswal was in the perfect position and the ball came at the perfect height. But it went down.

Skip to later in the innings and with India on top, only Marnus Labuschagne was left as a recognised batter.

On 46 and with Australia reeling at 6-99, Labuschagne played a late cut that went straight to Jaiswal at gully.

But again, the young 23-year-old dropped the chance.

Bowler Akash Deep was furious. Captain Rohit Sharma punched the air in disgust.

The final drop came in the final over before tea. Cummins, on 21, pushed forward and defended a ball from Ravindra Jadeja. Jaiswal at silly point was standing too high and the ball clipped his fingertips and went between his legs.

Khawaja added 19 more runs before being dismissed for 21. Marnus made 70 and Cummins finished with 41.

In a Test match that is going down to the wire, will India regret the extra 63 runs added after three of their batters were given lifelines?

5. Australia suffers their own run-out saga

A run-out on day two between Virat Kohli and Yashasvi Jaiswal dominated the headlines after day two. India then had all sorts of drams on day three running between the wickets, with communication breaking down multiple times.

On day four, it was Australia’s turn to have a mix-up that cost them a wicket.

Mitchell Starc whipped the first ball of the 59th over off his hip to deep square leg. He runs to the non-stirker’s end, turns, then sprints back for the second.

Unfortunately, he doesn’t realise Pat Cummins has said “NO”.

The ball is fired to the striker’s end, where Starc was running to, and collected by wicketkeeper Rishabh Pant.

Pant then fires to the other end and strikes the stumps with Starc out of his ground.

It was an unforced error from Australia that cost them their eighth wicket, and a lead of 261 runs.

Starc looked furious because he was running to the danger end, which is where the ball was initially thrown to.

If Cummins did decide to come back for a second, Starc may have been run out at the striker’s end anyway. It was an outstanding throw from the deep that was right over the stump and into Pant’s gloves.