As always, the race officials were kept busy in St Louis, with a total of 20 penalties handed out prior to and during the race.
NASCAR's post-race infraction sheet confirmed that four Cup Series drivers were all hit with the same speeding violation (speeding on pit road) at World Wide Technology Gateway, with Michael McDowell, Alex Bowman, Shane van Gisbergen, and Cody Ware all hit with tail-end penalties as a result.
Elsewhere, the most common infraction, as is often the case, was 'pitting before pit road is open', with 13 violations of this type, including to playoff drivers such as Chase Briscoe and Austin Dillon.
Other penalties of note issued during the race included a tail-end penalty for Tyler Reddick for 'car pitting out of the assigned pit box', whilst Ty Gibbs was hit with a penalty for 'vehicle interference'.
With all of that said, you can see a full list of Sunday's Cup Series infractions, when they happened, and the punishments they resulted in below.