Nothing ruins a team’s momentum on the football field like a penalty. When the referees on the sidelines pull out a yellow flag from their pockets, fans know someone messed up — they just hope ...

What does a flag mean in football? The yellow penalty flags are what the officials use to indicate when a rule has been broken. When a referee sees an infraction, they throw a flag onto the field.

Watch the highlights from Super Bowl LIX between the Kansas City Chiefs and the Philadelphia Eagles during the 2024 NFL season. Watch Kansas City Chiefs quarterback Patrick Mahomes' best plays ...