Chasing a modest 253 to win, Australia were reduced to 8-148 in reply after pacer Bhuvneshwar Kumar (3-9) as well as spinners Kuldeep Yadav (3-54, including a hat-trick) and Yuzvendra Chahal (2-34) cut through their batting with relative ease on Thursday.
This was Australia's 10th straight defeat in completed away ODIs.
"It's happening a bit too often for my liking, to be honest with you, in all forms of cricket, We've had a lot of collapses and we need to stop. "It's easy to just sit here and say 'it needs to stop', but when you get out in the middle you have to change what you're doing because it's not working," a dejected Smith told reporters at the post match press conference.
"Watching the ball closer or maybe the guys are trying to watch it too closely and forgetting about just playing the game.
"It's a hard one to put my finger on. But whatever it is, it needs to change and we need to make better decisions when we're under pressure and start playing the game properly. "Because we're having too many collapses and it's not good enough," Smith, who fought a lone battle scoring 59 runs, said.
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