A yellow card in soccer is a warning from the referee for breaking the rules or showing unsporting behavior. It usually means the player can keep playing, but they need to be careful because a second yellow in the same match becomes a red card and sends them off.

What it can mean

A yellow card is often given for things like reckless tackles, dissent toward the referee, time-wasting, simulation, or other unsporting actions. In soccer, this is also called being “booked,” because the referee records the caution.

What happens next

  • The player stays in the game after one yellow card.
  • Two yellow cards in one match equal a red card and an immediate sending-off.
  • In many competitions, yellow cards can also build up across matches and lead to a suspension, but the exact rule depends on the league or tournament.

Simple example

If a defender makes a late tackle that is careless but not violent, the referee might show a yellow card. That is basically the referee saying, “Don’t do that again.”

tldr

A yellow card means a caution : you are still in the match, but one more serious mistake—or another yellow—can get you sent off.