India insist there must be a higher standard of proof for the third umpire to overturn on-field decisions after a second batter in as many innings was dismissed on review for gloving to the wicketkeeper.

Only hours after Virat Kohli survived an umpire review for the would-be catch of the summer from Steve Smith, India found themselves back on the wrong side of the ledger at the SCG on Friday.

Australian captain Pat Cummins reviewed a not-out call on Washington Sundar, who had attempted to pull his bouncer away late on day one of the series-deciding Test.

On review, the ball looked to have contacted Washington's glove as it flew to wicketkeeper Alex Carey, though real-time snicko (RTS) showed only a minuscule spike as the ball passed through.

"I can't differentiate any gap between ball and glove," said third umpire Joel Wilson before giving the allrounder out.

Washington (14) stood his ground after Wilson made his decision before eventually walking slowly from the pitch to jeering from the Sydney crowd.

The situation bore eerie resemblance to a game-defining dismissal at the MCG last week, when Yashasvi Jaiswal was given out on review as the third umpire again deferred to visual evidence rather than RTS.

"There is not much to say because technology is one part which as a cricketer, you can't control," wicketkeeper-batter Rishabh Pant said of the latest decision.

"But I feel whatever decision we make on the field, it has to stay with the on-field umpire. That's the only thing, unless it's so conclusive to change the decision, I think we should stay with the on-field umpire.

"The rest is umpire's decision, at the end of the day. I can't challenge that every day but technology can be a little better, I guess."

Earlier, Steve Smith believed he "100 per cent" took a clean catch to dismiss India's pantomime villain Kohli, whose survival prevented the tourists from falling to 3-17.

Having dispatched opener Jaiswal with his previous delivery, cult hero Scott Boland enticed Kohli into clipping to the cordon on the first ball he faced.

At second slip, Smith had his fingers under the ball before scooping Kohli's outside edge upwards with one hand. Marnus Labuschagne then completed what the hosts were sure was a catch.

"Hundred per cent, like, no denying it whatsoever," Smith told Fox Cricket when asked whether he had taken a fair catch.

But umpires Sharfuddoula Saikat and Michael Gough sent the catch upstairs for review by Wilson, who determined the ball had touched the grass as Smith attempted to control it.

"I had a good view, I thought it was clear as day from where I was, as being out," said Australian allrounder Beau Webster.

"Whenever you get a low catch, there's always going to be an element of grass close to the ball, especially when you slow it down (on replay).

"We all thought it was out and unfortunately it didn't go our way, that one."

Boland eventually had Kohli's wicket after lunch, the veteran edging a delivery wide of off stump to debutant Webster, who took his second slips catch of the day.

Out for 17, Kohli has averaged only 13.17 across six knocks since his unbeaten century in the series opener in Perth.