And when asked whether he knew who had scored the opening goal, coach Santos was also unable to shed light on the identity of the scorer.
"I think it was a great match," Santos said. "Our team played very well and the rest, for me, does not matter."
Portugal, which opened with a 3-2 win over Ghana, became the third team to reach the last 16 after France and Brazil.
Uruguay has one point from two matches and needs to beat Ghana on Friday to stand a chance of advancing.