Portugal midfielder Joao Mario insists a day's less rest will make no difference in his side's Euro 2016 clash against Croatia.
Fernando Santos' men are backing up just three days after their draw with Hungary for a meeting with the Group D winners in Lens on Saturday.
"We know we haven't much time to recover," he told a news conference.
"It's not ideal but we have to go onto the pitch and represent our country.
"In the knockout stage of a competition like this one, you always feel energised and I'm sure we'll be ready."
Cristiano Ronaldo (two) and Nani (two) have scored all of their team's goals at the competition so far.
"These matches are always very tactical, all the teams defend very well," the 23-year-old said.
"But I don't think we've been remiss and proof is that we scored three goals in our last match.
"I don't think we've lacked creativity."
"They'll have to run more than us and fight more than us to beat us and I don't think they'll be able to do that," he said.
"We believe that we will make it through."
