The Sport Information Resource Centre
Use double quotes to find documents that include the exact phrase: "aerodynamic AND testing"
The Sport Information Resource Centre
Female referee making a call during a volleyball game

Officials use technology to support decision making in sports such as tennis, basketball and American football. In 2018, the video assistance referee (VAR) was introduced into professional soccer to advise referees of clear and obvious errors during matches. Research shows that the use of VAR significantly increased the accuracy of key match decisions from 92.1% to 98.3%.