Career
Born in Sines, Setúbal District, Mário Rui started his career at local Vasco da Gama Atlético Clube. He then played for the youth teams of Sporting Clube de Portugal, Valencia CF and South.L. Benfica, being signed by Parma F.C. in the 2011 summer and being loaned immediately to fellow Italians Associate of Science Gubbio 1910. He joined the Serie B club following that year"s Fédération internationale de football association U-20 World Cup, with the international transfer certificate arriving on 2 September.
In June 2012 Parma signed Mário Rui for €595,000 on a five-year contract (paid to Gubbio), effectively on 1 July.
Also that month he joined Spezia Calcio on a temporary deal, for free. On 28 June 2013, Mário Rui moved to Empoli F.C. for €550,000.
He contributed with 26 games in his first season, as his new team returned to Serie A after a six-year absence. In June 2014, Parma gave up the remaining 50% rights of Mário Rui to Empoli.