Tackle (football)
In soccer, tackles are done with the feet around or against the opponent's feet. To be legal the opponent must have control of the ball at the time. Since soccer is a high-speed game, various rules protect the player running with the ball. However, from 2017, tackles from any direction that endanger an opponent's safety may result in the offender being sent-off. This includes "scissoring" which is likely to be punished with a send-off (red card), as it poses a high risk of severe knee injury to the player being tackled. A "studs up" tackle may be dangerous. Referees may caution (yellow card) players who commit such challenges.