Defending champions India proved no match for Pakistan on Sunday, losing the much-awaited final game of the Champions Trophy by 180 runs at The Oval in London.
Amir then smashed away the Indian top-order batsmen with a superb opening spell of six overs during which he made a three-wicket haul conceeding only 16 runs.
In the ODI player rankings, India opener Rohit Sharma, who scored 123 not out in the semi final, has gained three slots to reach 10th position while pace bowlers Bhuvneshwar Kumar (up four places to joint-19th) and Jasprit Bumrah (up 19 places to 24th) are the others to gain.
Amir, whose career was almost ended on the other side of London's River Thames by a ban and jail sentence for his involvement in a spot-fixing scan during a 2010 Test at Lord's, made a brilliant comeback after a back spasm forced him out of the semi-final victory over England.
Fakhar Zaman's maiden one-day worldwide hundred laid the foundations for Pakistan's formidable total of 338-4.
Kohli accepted his side had been second best as he acknowledged Pakistan's "amazing tournament".
Hardik Pandya cheered India fans in a capacity crowd as he hit three sixes off successive balls to bring up a dashing fifty.
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Fakhar and Azhar combined for 128, the first consecutive opening century partnerships by Pakistan in 14 years.
India's Ravindra Jadeja catches Pakistan batsman Fakhar Zaman, but the damage was already done.
As Pakistan beat India in the recently concluded Champions Trophy final in London, some television sets were broken in India, while the situation was quite different in Kashmir.
Even Golden Bat victor Shikhar Dhawan couldn't resist Amir's persistent accuracy, edging through outside off-stump, and when teenage spinner Shadab Khan successfully convinced Sarfraz Ahmed to review a "not out" lbw decision against Yuvraj Singh India's hopes were fading fast at 54-4. Opener Fakhar Zaman hit his maiden ODI hundred by making a fine 114.
"I hope this win will boost Pakistan cricket and hopefully all the (major) playing nations will come to Pakistan", said Sarfraz.
"We can't take anyone lightly but they were more intense and passionate on the day".
"The unsafe Dhoni was bounced out and Jadeja failed to sacrifice himself to allow the incredibly exciting Hardik Pandya to take India towards an unlikely victory", he added. Later Mohammad Hafeez helped his side to post 300 plus total with 57 from 37 balls.