Hawk-Eye to replace US Open line judges

Electronic line calling technology was also deployed at the Australian Open, a move largely welcomed by players.

USTA says seven of the nine ATP and WTA tournaments on the US swing would use the technology on all competition courts in 2021.

USTA says seven of the nine ATP and WTA tournaments on the US swing would use the technology on all competition courts in 2021.

Line judges will no longer feature at the US Open after the United States Tennis Association (USTA) said that it was implementing the use of electronic line calling on all courts at the year's final Grand Slam.

Hawk-Eye electronic line calling technology was also used at last year's US Open, apart from at the Arthur Ashe and Louis Armstrong stadiums. 

The tech was also deployed at the Australian Open, a move largely welcomed by players.

The USTA said in a statement that seven of the nine ATP and WTA tournaments on the US swing would use the technology on all competition courts in 2021.

"The USTA implemented electronic line-calling for the 2020 Western & Southern Open and US Open on all courts except Arthur Ashe and Louis Armstrong Stadiums," the governing body added. "In total, Hawk-Eye Live made upwards of 314,000 calls during the two tournaments."

READ MORE: Djokovic disqualified from US Open after hitting judge with ball

Novak Djokovic was sensationally defaulted during his fourth round match at Arthur Ashe Stadium last year when he struck a line judge after hitting the ball in frustration following a point during his match against Spain's Pablo Carreno Busta. 

READ MORE: US Open makes changes after Serena-Ramos incident

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