"Cricket is a game of glorious uncertainties. I wouldn't like to press the prediction button at this juncture," he said.
The right-handed batsman, considered one of the most technically sound batsman in world cricket, said Pakistan are a formidable side at home and would push them hard in the upcoming tri-series and the two Test series that follows the Paktel Cup One-day series.
"Pakistan is a good side. They don't give you wins on a platter. The team under the leadership of Inzamam have done well in recent times and we expect a tough fight from them," he remarked.
Atapattu said the Pakistan team was pretty well balanced be it their batting or bowling.
"They've great depth in their bowling. Shoaib and Sami are highly talented and have come on well for them. They also seemed to have found some good players to get runs at the top and in the middle. All in all, they're a very competitive side." Atapattu said.
On the composition of his side, he said the selectors have picked a side keeping in mind the prevailing conditions in Pakistan.
"We're going in with - eight batsmen, four seamers and three spinners," he said.
Commenting on Sri Lanka's poor run at the ICC Champions Trophy in England, the Lankan captain said luck played its part in ensuring they didn't progress further.
"We went to England with a confidence of 18 wins out of 22 games behind us. I think it was purely bad luck. Nothing went right for us. It was just a bad day in office," he concluded.