London - Pakistan captain Azhar Ali won the toss and elected to bat in the second one-day international against England at Lord's on Saturday.
England were unchanged from the side that won the rain-affected first ODI by 44 runs on the Duckworth/Lewis method at Southampton on Wednesday.
Pakistan, however, made three changes.
Sami Aslam, as he did in Pakistan's preceding 2-2 drawn Test series with England, replaced Mohammad Hafeez, with the top-order batsman now struggling with a knee injury.
Meanwhile leg-spinner Yasir Shah, one of the stars of Pakistan's rise to number one in the Test rankings, came in for Mohammad Nawaz while Hasan Ali took over from fellow paceman Umar Gul.
Alex Hales, Jason Roy, Joe Root, Eoin Morgan (capt), Ben Stokes, Jos Buttler (wkt), Moeen Ali, Chris Woakes, Liam Plunkett, Adil Rashid, Mark Wood
Sami Aslam, Sharjeel Khan, Azhar Ali (capt), Babar Azam, Shoaib Malik, Sarfraz Ahmed (wkt), Imad Wasim, Yasir Shah, Hasan Ali, Wahab Riaz, Mohammad Amir
Umpires: Marais Erasmus (RSA), Tim Robinson (ENG)
TV umpire: Simon Fry (AUS)
Match referee: Jeff Crowe (NZL)