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How Many Substitutions Are Allowed in Football?

Yep, the Rules For Substitutions in Football Are Just as Complicated as They Seem

LYON, FRANCE - JULY 07: Megan Rapinoe of United States (L) leaves the field for substitution with Christen Press of United States (R) during the 2019 FIFA Women's World Cup France Final match between The United State of America and The Netherlands at Stade de Lyon on July 7, 2019 in Lyon, France. (Photo by Marcio Machado/Getty Images)

The 2020 Summer Olympics in Tokyo are quickly approaching, and all eyes will be on the world's most popular sport: football. The US Women's National Team — fresh off a World Cup win in 2019 — will compete for a fifth Olympic gold, and while the roster has yet to be set, we're likely to see a mix of Olympic veterans and fresh faces taking turns on the field. But how exactly do those substitutions work? Unlike many team sports, football has very specific rules governing the process.

At the Olympics, each team is allowed only three substitutions during a match. This means that most players who start the game will play the entire 90 minutes, with just 15 minutes to rest between halves. (Intense, huh?) In order for another player to enter the field, the referee must be made aware of the change, which can only be completed when there's a stoppage in play. Further, once a player exits the game, they're not allowed to reenter. A more recent rule allows for one additional substitute if the game is tied and goes into extra time.

Timing is everything when it comes to substitutions. According to ESPN, most coaches try not to waste their substitutes in the first half. In fact, it's not uncommon to see coaches wait until the 60th minute to use their first sub, and even later to use the remainder, if they use them at all. Usually, substitutions are made because of an injury or to put fresh legs on the field in place of a player who's lagging. In the end, it's about strategy — and teams want their healthiest, most effective players on the field for as long as possible.

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