Dhaka: Defending champions Pakistan take on Sri Lanka in the opening match of the Asia Cup in Fatullah, a suburban town south of Dhaka, today.

Sri Lanka begin the tournament with the advantage of having been in Bangladesh for the past month, winning the Test, Twenty20 and one-day series against the hosts.

Sri Lanka's captain Angelo Mathews remains optimistic about their face off with India and Pakistan. "We have played a lot against Pakistan and India," Mathews told reporters at a news briefing on Monday.

"We know them and they also know us."