In contrast, England go into the tournament after suffering a 6-1 defeat at the hands of defending champions Australia in their last home one-day series.
But Sri Lanka coach Trevor Bayliss said Thursday his team needed to put in another impressive all-round performance as there would be no easy matches.
"We are very happy with the win the other day, but also realise that the three games in this group are all difficult," said Bayliss.
"That series (England v Australia) has gone. I am sure they (England) will try to set the record straight here.
They will be coming out as hard as they possibly can.
"We certainly won't be taking any team lightly. We perform best when we concentrate on what we do best."
Sri Lankan opener Tillakaratne Dilshan and unorthodox spinner Ajantha Mendis played big roles in their win over the hosts