Jonny Bairstow did not bat in his usual position of No 5 after sustaining a small fracture to his finger while keeping wicket on day three, with Jos Buttler (19no) and Ben Stokes (3no) in the middle at lunch - Buttler dropped on one by Rishabh Pant in a rare Indian fielding blemish.
With Bairstow either absent from the innings, or batting under severe discomfort, it will surely raise the level of the mountain which England face over the next two days. But Sportsmail understands England are now hoping the timing of the birth will allow Cook to take his place in what is shaping up to be a crucial game.
India picked four wickets in the first session on Day 4, tightening their grip on a match they have dominated all along.
Alastair Cook could miss the fourth Test against India in Southampton next week to attend the birth of his third child.
Rahul, in particular, was aggressive as he hit seven fours and scored at 100-plus strike rate during his 33-ball stay.
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"In county cricket I thought I was batting well but didn´t score too many", he told Sky Sports.
Ever since Anushka Sharma started dating Indian cricketer, Virat Kohli, both have been giving us some major relationship goals every now and then.
When Cook edged Ishant Sharma to give Pant an easy first Test catch it meant England´s all-time leading Test run-scorer had made 252 runs in the format at a meagre average of 19.38 this year. The 29-year old batsman went from 98 to 102 with the help an edge that raced to the boundary, thus reaching his 23rd Test century.
"You would be hard-pressed to argue against him being seen as the best player in the world at the moment", said England assistant coach Paul Farbrace.
But Kohli failed to capitalise on the chance as he was trapped lbw by Chris Woakes (1/49) soon.
Pandya, now starring with the bat, extended India´s lead to 500 with a straight six off leg-spinner Adil Rashid and he had made a run-a-ball 52 not out when Kohli finally called a halt.