De Rossi, Castan see red as Roma thumped at Juventus
Carlos Tevez created Juve's opener, turning De Rossi before playing in Arturo Vidal to fire past Morgan de Sanctis.
Immediately after halftime, Juve doubled the lead as Andrea Pirlo's free-kick found an unmarked Leonardo Bonucci, who forced in the home team's second for the night.
De Rossi was then shown a straight red card for an ugly challenge on Giorgio Chiellini and minutes later he was followed by Castan.
The defender was sent off for using his hand in a goalline clearance on Chiellini's header. It was inevitably also a penalty and substitute Mirko Vucinic converted against his former club.
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