Pakistan captain Misbah-ul-Haq blamed a dreadful first-innings batting performance for their seven-wicket loss to Sri Lanka.
Misbah-ul-Haq says Pakistan's drop-off in form with the bat is a worry following their second Test defeat to Sri Lanka.
Having claimed an emphatic 10-wicket win in the first Test, Pakistan slumped to a disappointing seven-wicket loss in the second as Sri Lanka successfully chased down a modest target of 153 on the final day.
Pakistan were bowled out for 417 in the first innings in the opening Test but could not repeat that performance in Colombo.
After choosing to bat on day one, Pakistan slipped from 70-2 at the interval to 138 all out in the first innings before Sri Lanka replied with a score of 315 all out.
A second-innings total of 329 ultimately proved in vain, leaving Misbah under no illusions as to what Pakistan need to do to emerge triumphant in the third and final Test in Kandy, which begins on Friday.
"The session from lunch to tea really dented as on the first day," Misbah said. "We lost all our best batsmen during that period.
"That was I think the main difference in the Test match. It's a really big worry for us that we put up really big scores in the first Test but in the second Test we were dismissed from 70 for 2 to 138. We really need to play the first innings well."