Tea Pakistan 286 and 38 for no loss (Abid 20*, Shafique 18*) trail Bangladesh 330 and 157 (Liton 59, Yasir 36, Afridi 5-32) by 164 runs
The openers Abid Ali and Abdullah Shafique gave Pakistan another sound start, as the visitors were set a 202-run target to win the Chattogram Test. Pakistan went to tea on the fourth day at 38 for no loss, with the Bangladesh bowlers unable to beat the bat too many times.
The pair faced 36 balls each, with Abid hitting three fours in his unbeaten 20 while Shafique moved to 18 with the help of two fours.
Pakistan had earlier bowled out Bangladesh for 157 runs in the second innings with Shaheen Shah Afridi taking 5 for 32, his fourth five-wicket haul, following up his ten-wicket haul in Pakistan's previous Test.
Bangladesh were glad to extend their second innings on the fourth day after they lose four early wickets on the third evening. Shadman Islam and Najmul Hossain Shanto fell to Afridi in the space of three balls, before Mominul dinked an easy catch to midwicket. Afridi troubled Saif Hassan in the second innings too, getting one to leap onto his chest, resulting in a simple return catch.
The fourth morning started poorly for the hosts, when Hasan Ali bowled Mushfiqur Rahim who shouldered arms to a delivery that nipped back in. Liton and debutant Yasir Ali added 47 runs for the fifth wicket, albeit with some risky moments. Yasir was nearly run out while Liton survived a missed stumping and reviewed a caught decision against him.
Afridi put paid to Bangladesh's recovery at that stage when he struck Yasir on the back of his helmet with a bouncer, around the first hour mark. Yasir walked off after seven deliveries, and was sent for scans.
His concussion substitute Nurul Hasan struck three fours before playing a needless lofted shot, straight to long-on. Liton followed him back to the pavilion shortly, trapped lbw by Afridi, who then removed Abu Jayed with another rip-snorter that struck him on the gloves and grille, before reaching wicketkeeper Mohammad Rizwan.
Offspinner Sajid Khan finished the innings with his third wicket, when Taijul Islam was stumped for a duck.
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Mohammad Isam is ESPNcricinfo's Bangladesh correspondent. @isam84