The flag is up! We explain what that means and why one of soccer's most important rules is also one of the toughest to see ...

Qatar vs Switzerland had one controversial moment in the first half of their World Cup group stage match in San Francisco ...

Whether it's a narrow offside, debated handball, touch-and-go penalty, or contentious red card, VAR is going to make it's ...

Understanding soccer's offside rule hinges on timing — it's about a player's position when the ball is passed, not received.

The Women’s World Cup is back again, which means one of the most controversial calls in sports has also returned. The offside rule has caused some of the most frustrating moments ever in soccer and ...

Premier League clubs have unanimously voted in favour of introducing semi-automated offside technology from next season. Why have they done this? What exactly IS semi-automated offside technology?

Switzerland were awarded a penalty during their World Cup Group B clash against Qatar which left an ITV commentator confused ...

This article may have Spanish-language video from our Telemundo sister station. Get the latest World Cup news in Spanish from Telemundo. NBC Universal, Inc. World Cup soccer is back again, which means ...