Cape Town - Australia captain Steve Smith says the team's batsmen are making "silly errors" as they fell to another defeat against India in the ODI series in Kolkata on Thursday. 

Chasing a target of 253, the visitors crumbled to 202 all out in the 44th over with India spinner Kuldeep Yadav claiming a hat-trick. 

Smith scored 59 and Marcus Stoinis was left stranded on an unbeaten 62 but the other batters again played poor shots as Australia went two-nil down in the five-match series. 

Smith told reporters  after the game: "We've had a lot of collapses and we need to stop. It's happening a bit too often for my liking, to be honest with you, in all forms of cricket. 

"The guys have trained really well and it's now about getting out in the middle and executing your skills when you're under pressure and not panicking. 

"I think we panicked last game a little bit and in this game, we just couldn't get the partnerships. We're making silly errors when we're under pressure. 

"It's a hard one to put my finger on but whatever it is, it needs to change. We need to make better decisions when we're under pressure and start playing the game properly. It’s not good enough."

Australia will now have to win the third ODI in Indore on Sunday to stay in the series.