India had lost the first Test, in Adelaide, by eight wickets after collapsing for 36 in their second innings. Bouncing back at the MCG wasn't going to be easy, not without Virat Kohli and Mohammed Shami, but they did just that, scripting a famous win. Here's a look at five points when the match turned in India's favour.
Ashwin sends Smith back for a duck
After Australia chose to bat, India dismissed the openers cheaply, but Steven Smith was the big wicket. R Ashwin had dismissed Smith in Adelaide, and got him again at MCG, with just his second ball to him at that. He got one to dip and then turn, and Smith was caught at leg slip, where a fielder had been placed exactly for that. Early advantage to India.
Labuschagne falls into the leg-side trap too
With Smith gone, Marnus Labuschagne was Australia's most important batsman and had got to 48. At 134 for 4, Australia would still have been hopeful of a decent first-innings total. But Labuschagne flicked casually at a delivery going down leg from debutant Mohammed Siraj, and it went to the leg gully where Shubman Gill took a smart low catch - exactly as planned. Australia had lost the advantage of winning the toss.
Smith drops Rahane on 73
Australia were uncharacteristically poor in the field during India's first innings. Gill had been given two lives, one when he was on just five, and Rishabh Pant got a chance too, but was dismissed shortly after. Then Smith put Ajinkya Rahane down at second slip off Mitchell Starc. When India were just 40 runs ahead, with just Aswhin and the quicks left to bat. It was a tough chance, but had it been taken, the first-innings lead may have been half of what it ended up being.
Bumrah bowls Smith around his legs
Australia needed a big second-innings contribution from Smith after conceding the 131-run lead. He had faced 30 balls and looked like he was set when Bumrah got one to nip back at him. Smith often walks across and exposes leg stump but rarely misses connecting with the ball. This time, Bumrah's pace and a little bit of movement back in made Smith miss. The ball removed the leg-stump bail to leave Australia three down and still 60 behind.
Paine gets unlucky with the DRS
At 99 for 5 in the second innings, Australia's last hope was for Tim Paine, Player of the Match in the first Test, to put together a big partnership with Cameron Green. He missed a cut shot against Ravindra Jadeja, and there was an appeal for caught behind that was turned down. Rahane, standing at first slip, reviewed immediately, but both the bowler and keeper looked unsure. Paine shook his head, confident he had not nicked. Hot Spot showed no mark, but the real-time snickometer showed a small spike, and Paine was given out. As Paine walked back dejected, and a bit puzzled, India knew they had closed in.