Shan Masood fell for 125 but Younus Khan continued from where he left off on Monday as Pakistan reached lunch on 321 for three, needing 56 more runs on the final day to clinch the final test and the three-match series on Tuesday.

Off-spinner Tharindu Kaushal drew Masood out of his crease with flight and beat him with turn to have him stumped but not before the opener had added 242 runs with Younus to turn the match on its head.

Younus was unbeaten on 142 with skipper Misbah-ul-Haq (27) at the other end with the visitors closing in on a remarkable win, having slumped to 13-2 on Monday in their pursuit for a 377-run victory target.

Masood, then on 120, survived a strong caught-behind appeal with bowler Angelo Mathews and wicketkeeper Dinesh Chandimal convinced he had edged it.

Umpire Ian Gould, however, felt otherwise and Sri Lanka moved on having exhausted both of their review opportunities.

Even after Masood departed, Younus played with characteristic fluency, hitting 13 boundaries in his unbeaten 237-ball knock. (Reporting by Amlan Chakraborty in New Delhi; editing by Ian Ransom)