2020 US Open (tennis)
Videos
The 2020 US Open was the 140th edition of tennis's US Open and the second Grand Slam event of the year. It was held on outdoor hard courts at the USTA Billie Jean King National Tennis Center in Queens, New York. The tournament was an event run by the International Tennis Federation (ITF) and was part of the calendars for the 2020 ATP Tour and the 2020 WTA Tour, the top professional men's and women's tennis circuits, respectively.
The Arthur Ashe Stadium (pictured here in 2006) was the venue for the 2020 US Open finals.
Novak Djokovic (pictured) received the top seed in the men's singles event and was the favorite to win the title.
Dominic Thiem (pictured) defeated Alexander Zverev in the Men's singles final to win his first Grand Slam title.
Electronic line judge
Videos
An electronic line judge is a device used in tennis to automatically detect where a ball has landed on the court. Attempts to revolutionize tennis officiating and the judging of calls in the sport began in the early 1970s and has resulted in the design, development and prototyping of several computerized, electronic line-judge devices. The methods have been based upon the use of pressure sensors, sensors to detect magnetized or electrically conductive tennis balls, infrared laser beams, and most recently video cameras.
The Mylar sensors used beneath the carpet to detect where the ball landed for the first computerized, electronic line judge device. The inventors; Grant (left) and Nicks. Photo taken in 1976.