Umar Akmal was undefeated on 29 and put on 45 with his captain for an unbroken fifth wicket partnership. The match started as a 49 over affair and was further reduced when rain intervened for the second time after Pakistan reached 68 for two off 17 overs chasing a target of 262.
When play resumed after the break the Pakistanis required a further 121 off 14 overs under the Duckworth/Lewis method.
Earlier, Marlon Samuels started cautiously and later blossomed as his innings progressed to stroke a masterful 106 not out to steer the west Indies to a competitive 261 for seven off 49 overs.
The stylish Jamaican struck nine fours and four sixes in 151 minutes off 104 balls. It was his fifth One day International hundred and second against Pakistan.
He featured in a fifth wicket partnership of 95 with in form Lendl Simmons who hit 46 off 44 balls with five fours and one six.
Samuels was also involved in a 57 run partnership for the fourth wicket with Chris Gayle who contributed 30 batting down the order at number five.
The other major knock in the West Indies innings came from opener Johnson Charles whose 32 came off 48 balls laced with five boundaries.
Tall Pakistani opening bowler Mohammad Irfan with the wickets of opener Devon Smith and Darren Sammy had the best returns for his team with two for 60 from 10 overs.
WEST INDIES innings
D. Smith c +U Akmal b M Irfan 8
+ J. Charles lbw J. Khan 32
DM. Bravo c S Ajmal b W Riaz 9
M. Samuels not out 106
C. Gayle c (sub U. Amin) b S Afridi 30
L. Simmons b S Ajmal 46
D. Sammy b M Irfan 7
*DJ. Bravo run out (M Irfan) 6
K. Roach not out 0
Extras: 6lb 9w 2nb 17
Total for seven wickets (49 overs) 261.
Did not bat: S. Narine, J. Holder.
Fall of wickets: 1-20, 2-50, 3-63, 4-120, 5-215, 6-239, 7-253.
Bowling: M. Irfan 10 – 1- 60- 2, M. Hafeez 8 – 1 – 30 – 0, J. Khan 9 – 2- 39 – 0 (4w) (1nb), W. Riaz 6 – 0 – 42 – 1 (4w) (1nb), S. Afridi 6 – 0 – 41 – 1 (1w), S. Ajmal 10 – 0 – 43- 1.
PAKISTAN innings
N. Jamshed run out (Charles) 22
A. Shehzad lbw J. Holder 14
M. Hafeez C Darren Bravo b K. Roach 59
*M. Ul-Haq not out 53
S. Afridi C L. Simmons b Dwayne Bravo 7
+ U. Akmal not out 29
Extras 1 lb 3w 1nb 5
Total for four wickets 189 (30 overs)
Fall of wickets: 1-20, 2-60, 3-132,4-144.
Did not bat: H. Sohail, W. Riaz, J. Khan, M. Irfan, S. Ajmal.
Bowling: J. Holder 5- 0- 41- 1, (2w) (1nb), K. Roach 6-1-33-1, S. Narine 7-0-29-0, D. Sammy 3-0-10-0, Dwayne Bravo 6-0-49-1 (1w), M. Samuels 3-0-26-0.