Ravichandran Ashwin picked up four wickets as Australia finished on 251/6, leading India by 348 runs on Day 4 of the SCG Test (All images AP and AFP)

Day 4 started on a poor note for India as Virat Kohli fell after adding just seven runs to overnight score.

Wriddhiman Saha started well and was looking solid but he too was dismissed for 35.

Ravichandran Ashwin led India's rearguard with his 4th Test fifty.

The day was not without controversy! Bhuvneshwar Kumar, who was going very strong, was given out caught at first slip by the third umpire after watching it multiple times on replay. The benefit of doubt should have gone to Bhuvneshwar but the the TV umpire ruled in favour of Australia.

Australia earned a first-innings lead of 97 runs but were jolted early. Ashwin got a lot of turn and bounce to get David Warner out in just the 2nd over.

With the light fading and the wicket crumbling, Chris Rogers decided to go after the bowling and reached his sixth successive Test fifty.

Virat Kohli, India's man of the moment, was taunted often by the home crowd.

Steve Smith kept his purple patch going, shattering a record held by Don Bradman for most runs in an India vs Australia series.

Smith was dismissed for 71 by an excellent ball by Shami.

Joe Burns played an excellent cameo, smashing 66 off 39 balls.