Rahul, meanwhile, was originally a candidate for the middle order. Since the 2023-24 South Africa tour, Rahul has batted exclusively in the middle order in Test cricket, scoring 339 runs in 10 innings at an average of 37.66 - higher than his career figure of 33.87 over 53 Tests - including a century at Centurion and two fifties.

Rahul, however, has plenty of experience of facing the new ball overseas, and is one of only two Asian openers to have scored Test centuries in England, South Africa and Australia. Those high points, however, have come against the backdrop of a less-than-spectacular overall record as opener: 2551 runs in 75 innings at 34.94.

If Rahul does return to the top of the order, it will be something of a reprise of the 2021 England tour, which he began having stated his intention to bat in the middle order. Injuries to Shubman Gill and Mayank Agarwal, however, created a vacancy at the top, which Rahul filled on the course of a successful tour that included a century in a memorable win at Lord's.

Sarfaraz, for his part, does not start the Australia tour as a certainty in the XI. After that 150, he failed to get past 19 in four innings against New Zealand, and has never previously played Test cricket outside India. Given the pacy, bouncy conditions expected in Perth, India may yet be undecided on whether to pick Sarfaraz at No. 6, or play Rahul there - in which case Abhimanyu opens if Rohit is absent - or, in a left-field move, pick both Jurel and Rishabh Pant and play one of them as a specialist batter.

Jurel has not played any Tests since Pant's return, but has cemented his spot as India's reserve keeper and an exciting future prospect.

Given all the possible permutations in Perth, the selectors and team management will likely pay as much attention to Jurel's displays in Melbourne with both bat and gloves as they do to those of Rahul and Abhimanyu against the new ball.