Pakistan are on the brink of recording their first ever series victory in the Caribbean after claiming an emphatic win in Jamaica.
The young West Indies squad find themselves with their backs against the wall after initially competing with the visitors before wilting late in the game at Sabina Park.
Pakistan skipper Misbah-ul-Haq has found inspiration playing in his final series and looks determined to power his men to a series win to go out on a high.
His opposite number Jason Holder has shown signs of becoming a world-class allrounder but he is in desperate need of support.
The West Indies need to show more application with bat in hand and more ruthlessness with the ball.
For Pakistan it will be about staying on a roll and maintaining control of the series and they will be a little concerned about the openers lack of form.
With ball in hand Yasir Shah and Mohammad Amir have ensured that there is a balance in the Pakistan attack and helped peg the hosts back after a good start.
While the West Indies bowlers looked better than their batting they need to find a way to be more consistent, it is key that Alzarri Joseph and Shannon Gabriel continue the progress they have made in the last few months.
The Windies fragile batting leaves Pakistan as firm favourites to claim a series win in Barbados.
Shai Hope finds himself in a position where he is probably the best batsman in the West Indies team but he now needs to prove it with a big Test knock.
Shannon Gabriel is the cornerstone of the Windies pace attack and they will desperately need him to come up with the goods in Barbados.
Misbah-ul-Haq has found form once again and should Pakistan find themselves in trouble he will be the man to get them out of it.
Mohammad Amir will look to build on the career-best 6 for 44 he took in the first innings of the first Test and continue to tear through the Windies batting
West Indies: Jason Holder (capt), Devendra Bishoo, Jermaine Blackwood, Kraigg Brathwaite, Roston Chase, Miguel Cummins, Shane Dowrich (wk), Shannon Gabriel, Shimron Hetmyer, Shai Hope, Alzarri Joseph, Kieran Powell, Vishaul Singh.
Pakistan squad: Misbah-ul-Haq (c), Ahmed Shehzad, Azhar Ali, Shan Masood, Babar Azam, Younis Khan, Asad Shafiq, Sarfraz Ahmed (w), Usman Salahuddin, Yasir Shah, Shadab Khan, Mohammad Asghar, Mohammad Amir, Wahab Riaz, Hasan Ali, Mohammad Abbas.
Last five head-to-head results
2017 First Test: Pakistan won by 7 wickets at Sabina Park
2016 Third Test: West Indies won by 5 wickets in Sharjah
2016 Second Test: Pakistan won by 133 runs in Abu Dhabi
2016 First Test: Pakistan won by 56 runs in Dubai
2011 Second Test: Pakistan won by 196 runs in Basseterre
April 30-May 4
Morning session: 10:00-12:00 (14:00-16:00 GMT)
Afternoon session: 12:40-14:40 (15:40-18:40)
Evening session: 15:00-17:00 (19:00-21:00)
Umpires: Bruce Oxenford, Richard Kettleborough
TV Umpire: Richard Illingworth
Match Referee: Chris Broad