Former captain Alastair Cook was stumped by Harshit Rana's inclusion as a concussio substitute for Shivam Dube in the fourth T20I in Pune on Saturday.

All-rounder Shivam Dube was hit on the helmet by a Jamie Overton delivery on the final over of the Indian innings. Dube complained of mild headache and fast-bowler Harshit Rana replaced him as a concussion substitute.

Shivam Dube, who scored 53, was hit on the helmet in the penultimate ball of the Indian innings by a Jamie Overton delivery.

Watch: England captain Jos Buttler criticizes the decision to replace Shivam Dube with Harshit Rana as a concussion substitute, calling it 'not like-for-like.' Find out more!

Harshit Rana in as Shivam Dube's concussion-sub sparked a controversy in the 4th T20I and now former England captains are reacting.

Jos Buttler questioned India's decision to replace Shivam Dube with Harshit Rana as a concussion substitute, calling it unfair and not a like-for-like replacement after the IND vs ENG 4th T20I.

Both Shivam Dube and his concussion sub Harshit Rana ended up making significant contributions at crucial junctures in either innings, leaving Jos Buttler's England 15 runs short in a 182-run case on Friday.

Harshit Rana came in on as a concussion substitute for Shivam Dube, who got hit on the helmet in the last over of the first innings. However, with Harshit being a bowling all-rounder and Shivam being a batting all-rounder,