Porto midfielder Fabio Vieira urged calm after their thrashing by Champions League opponents Liverpool.

Porto lost at home 1-5 to the Reds on Tuesday night.

Afterwards, Vieira said: "We leave, of course, sad.

"We knew it would be an extremely difficult game, Liverpool are one of the best teams in the world, with the best players in the world.

"But we were also aware that we could only beat Liverpool if we were at our best, all right, and that's not what happened. Today was not our day."