His figures of 6/33 literally dismantled Australia for a paltry score of 151 in the first innings.
Cummins remained positive of a favourable outcome in Australia's favour even though it looks a tough situation from here.
Harris, having copped a thunderous bouncer blow to the helmet from Bumrah on Thursday, was out hooking another short ball from the same paceman. "That was the plan", he added.
Bumrah broke a 39-year-old Indian record on Friday as he surpassed Dileep Doshi's tally of 40 Tests wickets in a debut year.
"I am not surprised".
Crowd trouble has again overshadowed the third Test, with fans evicted from the MCG over a series of racist remarks directed at India.
"I'm depressed", Haddin said about the pitch on SEN Test Cricket. "I was always confident that whenever I get a chance I'll be able to do well", Bumrah said at the press conference.
Pant and Sharma scored freely in the final half hour of play and Kohli ultimately decided against forcing Australia to bowl for a third-consecutive day, instead opting to try and take a vital wicket of two.
They are now primed for victory in this third Test as well, after leading by 346 runs overall despite finishing at 54/5 following a mini-collapse in the second innings.
Bumrah, who finished with 6 for 33, became the first Asian bowler to pick up five-wicket hauls in South Africa, England and Australia in his first year in Test cricket.
Shaun Marsh (19) and Head then added 36 runs for the fourth wicket and brought some semblance of stability to the Australian innings. Hopefully, there won't be too many overs tomorrow and we won't have to bowl last in this game. We are not focussing on that (tiring out Australian bowlers).
Only seven wickets came on the first two days, but 15 wickets fell on day three.
Shaun Marsh showed a lot of discipline and nearly saw through the session but was flummoxed by a superb slower one by Bumrah off the last ball before lunch to be dismissed LBW for 19, leaving Australia in despair.
CA's ticket and entry conditions expressly prohibit any sort of racist taunting, stating in part: "I will not engage in any conduct (whether through the use of language, gestures or otherwise) which is likely to offend, insult, humiliate, intimidate, threaten, disparage or vilify any other person (including any player, match official, other official or other patron) on the basis of their gender, race, religion, culture, colour, sexual orientation, descent or national or ethnic origin. The execution was good on the day".
"Let people say what they want (about my action). That way, I have been lucky".