Asitha Fernando put Bangladesh on the backfoot with a four-wicket haul, as the hosts collapsed to 178 all out on the third day in Chattogram. Sri Lanka themselves slipped to 102 for 6 with debutant Hasan Mahmud picking up four of those wickets. But the visitors' lead stands at a formidable 455 runs at stumps after they didn't enforce the follow-on on Bangladesh. The Sri Lankan quick bowlers went after two by two and benefited extraordinarily from commander Dhananjaya de Silva's imaginative field placings. Vishwa Fernando, Lahiru Kumara and Prabath Jayasuriya accepted two wickets each as Bangladesh slipped from 96 for 1 to be bowled out in the following 35.5 overs. It was additionally their fifth progressive sub-200 score in Tests, as their batting disintegrated on one or the other side of the mid-day break on the third day. Bangladesh began the day with certainty. Without precedent for the series, two home players - Zakir Hasan and nightwatcher Taijul Islam - thoroughly searched in some control. Zakir, unbeaten short-term on 28, struck two certain fours in the initial two overs. He arrived at his fourth Test fifty with a dirty four however generally searched in charge. Sri Lanka had a couple of whiffs of a wicket yet Zakir and Taijul saved them under control for an hour and 19 minutes in the first part of the day meeting. That changed terrifically when Vishwa burst an inswinger through Zakir sending the leg-stump for a cartwheel. Before long, Prabath got Najmul Hossain Shanto to chip one to short midwicket. Bangladesh lost a third wicket in three overs when the left-arm speedy Vishwa got one more of his quick in-duckers tearing through Taijul's protections. The nightwatcher, sent in at No. 3 on the subsequent night, opposed for an amazing 61 balls. Sri Lanka proceeded with the tension after lunch when Asitha set up Shakib Al Hasan with a two-sleight of hand. Subsequent to bowling a progression of short balls, he shocked the left-hander with a full ball that struck his front cushion plumb. Shakib in his most memorable Test innings in very nearly a year fell for 15. Three balls later, Asitha eliminated Litton Das. The wicketkeeper-player, enduring an onslaught for his imprudent shot in Sylhet last week, struck a pleasant cover drive prior to edging a straight, somewhat wide conveyance from Asitha. Kumara then, at that point, got Shahadat Hossain to edge one to second slip. Sri Lanka dropped two gets close to this time, while Mominul Haque turned into the fourth Bangladeshi player to arrive at 4,000 Trials. The accomplished left-hander batted unhesitatingly on the ground where he has seven Test hundreds of years. Yet, Asitha's yorker brought about his lbw excusal, for 33. Khaled Ahmed fell in Asitha's next finished, another yorker, providing the quick bowler with his fourth wicket of the innings.