[15] Ahead of the fourth Test, Shreyas Iyer was added to India's squad as cover for Virat Kohli, who was suffering with a shoulder injury.

[16] The second Test witnessed a controversy when the Australian team was accused of having taken help from the dressing room in using the Decision Review System (DRS).

Australia's captain Steve Smith admitted to having looked in the direction of the dressing room for assistance when he was given out leg before wicket (lbw) off Umesh Yadav when he was on 28 by the on-field umpire Nigel Llong, who, immediately intervened to send him back and denying a referral.

[31] India's captain Virat Kohli, in his post-match interview, accused the team of having done that on at least three occasions; once as Smith was declared lbw, and twice as he batted, which he stated to having pointed out to the umpires.

"[32] Australia's coach Darren Lehmann dismissed Kohli's allegations and responded that his team "[n]ever, ever, ever" sought the dressing room's assistance.