Esteban Gutierrez and Max Chilton have been hit with penalties for the United States Grand Prix following their incidents during qualifying.
Sauber driver Gutierrez has been handed a 10-place grid penalty for impeding Williams rival Pastor Maldonado four minutes into the first qualifying segment.
"Car #12 unnecessarily impeded car #16 between Turns 19 and 20 whilst performing manoeuvres that the stewards consider dangerous," said the stewards in a statement.
Gutierrez had qualified in 10th position and will start 20th on Sunday.
Marussia's Chilton was also penalised for impeding Maldonado later in Q1 and then Force India's Adrian Sutil, but the Briton, already starting last, will have to serve a drive-through penalty in the first five laps of the race.
This is the second time a pre-race drive-through penalty has been awarded. The previous instance was at the Japanese Grand Prix this year, when Caterham's Charles Pic was hit with one.