On lap 32 Barrichello came into the pits to take his stop-and-go penalty.
He was given the black flag and assessed a stop-and-go penalty.
Stewart was black-flagged last night, a 15-second stop-and-go penalty which dropped him back into the ruck.
He also received a stop-and-go penalty during the race for entering the pits while they were closed during a safety car period.
However, Alesi was forced to serve a 10-second stop-and-go penalty because his car moved forward before the start.
A violation on exit was subject to a stop-and-go penalty.
Both would serve 10 second stop-and-go penalties for this later in the race.
A stop-and-go penalty dropped him only down to second place.
Even a stop-and-go penalty for hitting a tire in the pits did not slow Guerrero's run.
He did a stop-and-go penalty one lap later.