how long does a team have to play a man down from a red card
In soccer, a team has to play the rest of the match with one fewer player after a red card. The sent-off player cannot be replaced, so the team stays down a man until full time.
What that means
- A red card removes the player immediately.
- The team continues with 10 players instead of 11.
- The disadvantage lasts for all remaining minutes of that game.
Important distinction
The red-carded player is usually also suspended for the next match, but that is a separate punishment from the in-game man disadvantage.
Simple example
If a player is sent off in the 20th minute, the team plays the remaining 70 minutes with 10 players.
TL;DR: a team plays man down for the rest of that match, not for a fixed number of minutes.