united earn 2 - 0 Serie A victory against Roma . goalkeeper De Silvestri gives away side 60th minute lead . goalkeeper Muriel gives Sampdoria 's advantage in 78th - minute . Seydou is shown second yellow card for sarcastically attacking referee .
Sampdoria earn 2-0 Serie A victory against Roma . Lorenzo De Silvestri gives away side 60th minute lead . Luis Muriel doubles Sampdoria 's advantage in 78th-minute . Seydou Keita shown second yellow card for sarcastically applauding referee .