Primeira Liga champions Sporting have been rocked by defeat in their UEFA Champions League opener against Ajax, losing 5-1 at home to the Amsterdam outift, this Wednesday.
Four goals from ex-West Ham United forward Sebastian Haller and an additional first-half finish from Steven Berghuis condemned Sporting to an embarrassing start to their European campaign, leaving them bottom behind the defeated Besiktas in Group C.
In the Spanish capital of Madrid, ten-man FC Porto were unable to go beyond a point in their first Champions League outing, against Atlético de Madrid at the Wanda Metropolitano, after Mehdi Taremi was unlucky to see a goal of his chalked off for handball.
Also destined for a goalless night was Benfica, who on Tuesday held onto a goalless draw to share the spoils with Dynamo Kyiv in Ukraine.
Updated article with match reaction