No Pac-12 Conference team has committed more penalties through six games than USC except UCLA.
The Trojans are averaging 7 1/2 penalties a game, having drawn 45 penalties for 437 yards.
Against Notre Dame on Saturday, they were flagged a season-high 10 times for 105 yards.
Interim Coach Clay Helton said Wednesday that an emphasis has been put on hand placement.
“You look at three of the key penalties in that game, and it’s where your hands are,” Helton said.
Receiver De’Quan Hampton and defensive backs Kevon Seymour and Adoree’ Jackson each were called for pass interference.