Primeira Liga misery continued on Sunday for Miguel Layun and company as FC Porto fell 2-1 to Arouca at the Estadio do Dragao.
Trouble started for Porto before the minute mark when Walter Gonzalez was able to beat his defender at the six-yard box and fire home after only ten seconds.
However, in the 14th minute, a Miguel Layun corner ended with Vincent Aboubakar heading past Rafael Bracali to level things at 1-1. The assist was Layun's 17th since joining the Portuguese side from Watford over the summer.
In all, it was a night to forget for Porto. In the 66th minute, Walter Gonzalez took advantage of a breakdown at the back and surged through the middle to grab his second goal on the night.
The result temporarily leaves Porto five points behind second-place Sporting after 21 games played in the Primeira Liga.
Jesus "Tecatito" Corona and Hector Herrera also started for the Dragões, completing all 90 minutes for José Peseiro.
You can watch highlights of Porto's defeat below: