Shri, centurymaker and Bhajji are the three biggest cuplrits for the loss imo
It's Kohli & Ashwin.
1st fault was losing the toss. Kohli needed to win this crucial toss given India's history of playing c*** in the first Test of so many series, including at home. And Australia were prepared and India were not and were complacent. So toss was even more important. Bat first in relatively better conditions, score 280-300 and things fall into place because Australia have to play catch up. And you are more likely than not, to win.
2nd big mistake- taking the new ball when the old ball was reversing and when Australia had just been reduced to 205/9 due to the old ball.. What an illogical move it was. And to make matters worse Kohli took off Ashwin just so that Umesh could get a 5-fer! ****ing crazy. Altogether cost 50 runs as Starc got set and began hitting big.
Whats worse was that Australia learnt that batting aggressively could really work in these conditions, so in the 2nd innings we saw Aus batsmen playing far more attacking shots, in fact, Warner scored 10 off the 1st over itself before getting out. The lesson that Australia learnt from Starc could really help Australia ahead in this series.
3rd big mistake- Kohli throwing his wicket away, making it 44/3 and putting the middle to lower order under tremendous pressure because the big 3 had now got out (Vijay, Pujara and Kohli). Kohli's body language wasn't good at all when he came to bat and I literally felt he was gonna get out very soon and he did! And there are some games where just from his body language you can feel he's going to get a ton and he does. But this time, in fact, the whole game I didn't get a good vibe from him, that spark and determination was missing and it translated into more and more mistakes as captain.
4th screw up- Losing 3 wickets in an over to SOK and then the lower order simply panicking.. Losing 7 wickets for 10 runs is the No.1 reason India have lost the game. The game was now effectively over as a contest. A miracle was required because Aus were always going to score 140-150 at least, and that would take the target beyond 300.. making it pretty impossible to chase.
5th screw up- Dropping catches especially of Smith, and wasting reviews and not able to review when out. This ensured that Target would be beyond 400 .i.e. not possible even if India bat twice.
6th- Ashwin was well below par, and he looked poor vs right handers. Jayant was terrible against all and would leak runs every over.
7th- This was a tailor made pitch for Jadeja but despite repeatedly missing the edge, he kept looking for it. Instead, he shouldve bowled straight more often. He needed to stop going a little wide everytime a batsman was successful in defending straight. Aus had a clear plan where they didn't mind missing the outside edge. They wanted to keep lbw away, but Jadeja by bowling straighter and with variation could've brought everything into play. He didn't need to spin it much, just a little. Poor awareness from him. Got carried away with the assistance that the pitch had.
8th- Mentally shot by the time Ind came to bat again and so got rolled for 100 once more. Had not seen Sok before the game and didn't have a clue why his balls weren't spinning. They basically got Jadeja'd by Sok, and didn't have any game plan to keep out his straighter ones. They learned nothing from 1st innings, which highlights the **** backroom staff they have who notice nothing. And the fact that India looked so unprepared shows their complacency and sh**iness of the sports staff once again.. Bcci really need to invest in this.. In contrast, Aus did everything they could to prepare for India. Amazing preparation. And hardwork pays off in terms of luck & performance. Sok fine example of hardwork he did to get set for the tour where he skipped part of big bash. And Monty has done well to assist him.