Pakistan A set up the second decider of the winter against England Lions with a six-wicket victory in Dubai to square the 50-over series at 2-2.
The Lions came from behind to win the T20 series between the teams before Christmas, with Tom Curran holding his nerve in a tense Super Over finish.
Now it is the Pakistanis who will go into Saturday’s decider with confidence after coming back from 2-0 down.
But Vince, who again looked in superb touch as he stroked six boundaries in making 32 from 26 balls, ran himself out for the second time in consecutive matches, this time calling for a third run to fine-leg.
The Middlesex opener, who missed Monday’s defeat with illness, had continued his consistent form with 56 from 76 balls. But after his departure the Lions middle and lower order floundered against four Pakistani spinners.
Liam Dawson was shaping well with 20 off 31 balls until he was run out after considering an ambitious second to deep mid-wicket.
The bowlers did their best to defend a meagre total of 181, with one wicket each for Craig Overton, Jake Ball, Dawson and Westley reducing the Pakistanis to 66 for four in the 24th over.
But Asif Zakir, a 32-year-old from Karachi, steered Pakistan home in the 47th over and ended unbeaten on 68, supported by Zohaib in an unbroken fifth-wicket partnership of 116.