14 May, 2017
That duly arrived in the last over before lunch when Brathwaite, who looked fairly comfortable up until then, jabbed at a delivery that spun away sharply to take the edge through to the wicketkeeper.
Shai Hope joined opener Kragg Brathwaite, and the latter looked unbreakable on sentry duty.
Following the tedium of the first three days, which saw a total of 15 wickets falling, ten have been lost in just two sessions on this penultimate day, heightening the prospect of a tense last-day finish with both sides seeking a series victory.
Azhar laboriously ground out a patient 127 in a marathon stay at the crease before Pakistan were finally bowled out for 376 in their first innings at Windsor Park in Roseau.
The Caribbean side trail Pakistan by 362 runs heading into the pivotal day three of the match.
Powell, on nine at the start, struck two fours in an innings lasting 82 deliveries before becoming the first casualty of the day, caught at wide mid-on playing a loose stroke at Yasir in the third over after the first drinks break. Shimron Hetmyer (17) was positive during his 18-ball knock that also had a six but was soon dismissed by the leg-spinner, when he nicked one to the keeper.
Pakistan is chasing its first Test-series win in the Caribbean in a landmark match for the tourists with both Misbah-ul-Haq and Younis Khan retiring from worldwide cricket after this Test.
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Chase was positive from the outset, dispatching the second ball after lunch for four off Yasir and then sweeping the same bowler fine a couple of overs later for another boundary.
There was more frustration for the bowler in his very next over as Asad Shafiq failed to hold on to a fierce square-cut from Hope.
There was no doubt though to Sarfraz's second dismissal of the morning as Brathwaite, who had grafted his way to 29 off 123 deliveries through three-and-a-half hours, pushed forward to Yasir in the last over before the interval and edged a catch high to the wicket-keeper's right.
Pakistan, after bowling out the West Indies for 247 for a first-innings lead of 129, went to lunch on 8-2 and fared no better in the middle session.
Get cricket score of the West Indies vs Pakistan, 2nd Test, Day 3 here.
Though both were watchful, Holder showed intent in the day's final over when he lofted the third delivery from Yasir clean over the ropes at long off.