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