Also, in the case of flagrant and technical fouls, the NBA reviews it after the game. They either rescind it or let it stand.
same with the NRL. generally massive punch ups or spear tackles go on report, they get watched after the game and the player at fault has to front a tribunal to plead his case (in person or video link), they then decide suspension or warning or what ever.
this is all done with in three days of the event.