Batting collapses and wild momentum swings encapsulated the pivotal second day of the second Test between India and New Zealand at the Hagley Oval.For starters, New Zealand faced the music, slashing and nicking their way into adversity against India's revitalized bowling group. The pitch contained demons galore and each delivery seemed like an event, with batsmen jumping and fending awkwardly, the cherry zooming past the outside edges.Umesh Yadav drew first blood, catching Tom Blundell plumb in front of the stumps before pace spearhead Jasprit Bumrah netted the big fish, Kane Williamson. Ross Taylor counter-punched briefly, but India tightened the screws and the experienced campaigner perished trying to force the issue. India's unforgiving bowling coupled with the deck's hostility meant New Zealand's middle-order proved to be sitting ducks. Notwithstanding Tom Latham and Kyle Jamieson's contrasting knocks, the hosts could only muster 235, conceding a lead of 7 runs.Ravindra Jadeja is all smiles after knocking over Colin de Grandhomme.Although Mohammed Shami dominated the wickets column, Ravindra Jadeja vindicated his selection ahead of frontline off-break bowler Ravichandran Ashwin, nabbing two crucial scalps besides plucking an absolute blinder down at square leg.Also see – PSL tableIndia looked to be in the ascendancy and an inspired batting performance could've sealed the deal, but what transpired next presumably damaged their chances beyond repair.The many dimensions of Ravindra Jadeja on display today. The wicket of de Grandhomme, the excellent catch of BJ Watling and now this stunner of Neil Wagner.— Harsha Bhogle (@bhogleharsha) March 1, 2020Trent Boult jolted India early, removing Mayank Agarwal. Prithvi Shaw defended resolutely and unfurled few gorgeous punches, but Tim Southee's well-directed bouncer caught him napping.Virat Kohli played and missed frequently and also brandished few trademark cover drives until Colin de Grandhomme's jagging in-ducker concluded the skipper's miserable tour.Now to the area where we need to do better- batting. Despite the late surge from NZ one has to say the bowlers have been stellar. Showing why we say they are a top bowling unit. If they are given a total to defend they will. Over to the batters.— Boria Majumdar (@BoriaMajumdar) March 1, 2020The tables had turned quite dramatically; India had squandered their advantage and were in desperate need of a partnership to steady the sinking ship. Having smelt blood, Kane Williamson unleashed his trump card, Neil Wagner.The tireless speedster peppered Ajinkya Rahane with an assortment of bumpers, with one delivery even clonking the right-hander's helmet grille. Rahane looked to be devising strategies to counter Wagner's ploy, but achieved little success and finally chopped on, leaving India gasping for breath.Sunday stumps at Hagley Oval. What a final session. Trent Boult on fire late in the day. Tim Southee, Neil Wagner and Colin de Grandhomme also with wickets as India end the day 90/6 and 97 runs ahead. Scorecard | https://t.co/z3Er2dXVK3 #NZvIND pic.twitter.com/8xAzPMXU5n— BLACKCAPS (@BLACKCAPS) March 1, 2020Much to India's chagrin, Cheteshwar Pujara and nightwatchman Umesh Yadav were castled in identical fashion with Boult using the angle from around the wicket and breaching their defenses.On the face of it, New Zealand well ahead. But India must believe they can stretch this to 200 and make a game out of this. That is how test matches are salvaged— Harsha Bhogle (@bhogleharsha) March 1, 2020By the time stumps were drawn, the visitors' lead sat at 97 runs and considering the nature of the surface and India's bowling efficiency, New Zealand could find chasing anything around 200 difficult.The Kiwis aren't expected to give any quarters tomorrow, although India will have their hopes resting on Hanuma Vihari, Rishabh Pant, and Jadeja, following which the bowlers will need to deliver the goods and script a morale-boosting victory.