Pakistan were bowled out for a platry 170 in 48 overs due to some disciplined effort from the Caribbean bowlers.
Pakistan owed their total to skipper Misbah ul Haq, who laboured his way to an unbeaten 96 and shared a 91-run stand with opener Nasir Jamshed (50) for the fourth wicket.
The worst part for Pakistan was that they could not bat out the full quota of 50 overs as Misbah was left stranded. The skipper faced 127 deliveries in his fighting knock which had eight boundaries including three sixes.
It was Roach's (3/28) fury upfront that blew away the Pakistani top order and then their middle crumbled while facing wily spinner Narine (3/34).
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The fourth-wicket partnership between Misbah and Jamshed was no less than a boon for Pakistan as it their bowlers something to fight for.
Pakistan did not have the best of starts after being sent into bat as they lost their first three wickets inside the 20-run mark as Roach accounted for Imran Farhat, Mohammad Hafeez and Asad Shafiq in a jiffy.
Shafiq did not help his side's cause either as he cut a short Roach delivery straight to Rampaul at third man to see Pakistan slumped to 15 for three in 6.1 overs.