India vs Pakistan: Live cricket score
Riding on Nasir Jamshed's second consecutive century, the visitors posted 250 all out and then shot out the Indians for a paltry 165 to record a convincing victory with two overs to spare at the Eden Gardens.
It was yet another woeful display by the famed Indian batting line-up, which has been struggling for sometime now and has been largely responsible for the team's forgettable results in recent times.
The huge defeat to the arch-rivals will now raise questions on the future of some of India's under-performing batting stars, who have let the team down more often than not.
Jamshed (106) notched up his third ODI century, all three coming against India, but Pakistan suffered a dramatic collapse after being at a healthy 141 for no loss at the mid-way stage. Mohammed Hafeez was the other contributor with a rollicking 76 off 74 balls.
The floodgates opened up after the dismissal of Hafeez as none of the other batsmen could hang around for long on a slow Eden Garden track, which made stroke-making difficult after the ball became older.
The Indians needed a good start from their struggling openers -- Gautam Gambhir and Virender Sehwag -- but it did not materialise yet again, putting pressure on the jittery middle-order.
Sehwag (31), Gambhir (11), Virat Kohli (6), Yuvraj Singh (9) and Suresh Raina (18) perished in quick succession to give the visitors the upper hand in what eventually turned out to be a lop-sided contest.
Skipper Dhoni, who scored a heroic unbeaten 113 in the first ODI in Chennai, again provided some resistance with a cautious and unbeaten 54 but wickets kept tumbling at the other end to nullify his efforts.
The series defeat against Pakistan marks another low for the struggling team which suffered an embarrassing Test series debacle against England at home and levelled a T20 series 1-1.
Today's defeat has also rendered the third and final ODI at Ferozshah Kotla in Delhi on Sunday inconsequential.
India vs Pakistan: Live commentary
Opener Nasir Jamshed struck his second consecutive century to give Pakistan a solid start but a middle-order collapse saw India bundle out Pakistan for 250 in their must-win second one-dayer at Eden Gardens on Thursday.
Under overcast conditions, Jamshed scored a fluent 106 from 126 balls (12x4, 2x6) and along with Mohammad Hafeez (76 from 74b; 10x4) put up a handsome 141-run opening partnership.
But India made a dramatic comeback riding on left-arm spinner Ravindra Jadeja's 3 for 41 as Pakistan were bundled out in 48.3 overs.
After giving the first breakthrough, Jadeja took two wickets -- Jamshed and Kamran Akmal -- in one over to trigger a collapse, as Ishant Sharma (3/34) polished off the tail.
From 141 for no loss, Pakistan lost 10 wickets in 25 overs as India made a spectacular comeback in their must-win match.
Put into bat, in-form Pakistani opening duo of Hafeez and Jamshed were at ease against the Indian pace attack up front and got off to a watchful start.
The inexperienced Indian attack of Ashok Dinda and Bhuvneshwar Kumar could not make use of the overcast conditions like skipper Mahendra Singh Dhoni would have expected after winning the toss.
On the other hand, it was intelligent cricket on display from the opening duo as they cleverly bisected the field to steal a boundary almost every over in the first Power Play to go almost six an over.
In his 'home' debut, Dinda was wayward with his bouncers, conceding three wides -- two in his second over -- while Bhuvneshwar too lacked the bite as the Pakistani duo went scotfree.
Against an ordinary Indian fielding that saw the ball flying past the fielders, it just made the ask easier for the Pakistani opening duo.
The 23-year-old Jamshed continued from where he had left in Chennai, while Hafeez made up for his duck with a sensible batting display and rotating the strike.
The duo never panicked and such clinical was their approach that they put on 100 runs in exactly 100 balls -- incidentally, Pakistan's first century stand by any opening pair at the Eden.
Hafeez completed his 15th half-century from 50 balls with a single to deep square leg.
After two overs, Jamshed followed suit notching his seventh half-century hammering Ashwin for a boundary over long-on.
The New rules -- that stipulate five players inside the 30-yard circle for full 50 overs -- added to India's misery as Pakistani batsmen were not deprived of the boundaries.
Part-time spinner Jadeja finally gave the breakthrough almost at the midway stage when Hafeez missed the ball trying to break free to end the glorious opening wicket stand.
Azhar Ali (2) continued his poor run when he was run out after being sent back by Jamshed from the striking end as Pakistan lost their second wicket in four runs.
They quickly lost a third, when Younis Khan (10) was unlucky to be adjudged leg before despite a bat-pad as the Indians managed to arrest the free flowing Pakistani run-rate.
Jamshed, however, kept his cool in his elegant innings to bring up his second consecutive century, third overall, all against India.
Jamshed clobbered Jadeja over his head for a straight overboundary to move to 96 and retained the strike taking a single on the last ball with a cool-headed demeanour.
The left-hander straight drove one uppishly in the midoff boundary region to bring up yet another century against India.
But he could not carry his innings through as he became Jadeja's second victim.
Jadeja claimed Kamran Akmal (0), his third, in the same over to bring in the Pakistani middle order collapse.
India has made one change the playing XI. Ravindra Jadeja has replaced Rohit Sharma in the side.
This game is crucial for Indian point of view as a defeat here could lead to series loss. India batsmen will have to fire with full cylinder to counter Paksitan’s superb bowling attack.
Pakistan lead the series 1-0 after winning the first ODI in Chennai by five wickets.
Ind: MS Dhoni, R Ashwin, AB Dinda, G Gambhir, RA Jadeja, V Kohli, B Kumar, SK Raina, V Sehwag, I Sharma, Yuvraj Singh
Pak: Nasir Jamshed, Mohammad Hafeez, Azhar Ali, Younis Khan, Misbah-ul-Haq*, Shoaib Malik, Kamran Akmal†, Junaid Khan, Umar Gul, Saeed Ajmal, Mohammad Irfan