Of the four Grand Slams that take place each year on the tennis calendar, perhaps the most traditional one is Wimbledon atthe All England Lawn Tennis & Croquet Club— it is the oldest of the four, after all. However, the 138th edition ofThe Championships at Wimbledonhas broken away from at least one of its longstanding traditions. If you keep a keen eye on the action at Wimbledon as the tennis ball goes past a player and out of bounds onthe grass court surface, you'll notice there are no longer line judges standing near the lines. Here's why the2025 Wimbledon Championshipdoesn't have line judges on the courts: REQUIRED READING:Where is Wimbledon played? Location for 138th Wimbledon Championships A new change to the 2025 Wimbledon Championships was the removal of a line judge and the introduction of an electronic line-calling system. There is still a chair umpire used in the Grand Slam event. "The decision to introduce live electronic line calling at The Championships was made following a significant period of consideration and consultation," said Sally Bolton, chief executive of the All England Club,in an October statement. "Having reviewed the results of the testing undertaken at The Championships this year, we consider the technology to be sufficiently robust and the time is right to take this important step in seeking maximum accuracy in our officiating. For the players, it will offer them the same conditions they have played under at a number of other events on tour. "We take our responsibility to balance tradition and innovation at Wimbledon very seriously. Line umpires have played a central role in our officiating set-up at The Championships for many decades and we recognize their valuable contribution and thank them for their commitment and service." As noted by The Associated Press,Wimbledon's decision to go away from a human line judge for this electronic line-calling system isn't a first for Wimbledon and theAll England Lawn Tennis & Croquet Clubto use technology. The tournament has used line-calling technology to call whether serves are in or out. Here's what it looks like on the baselines at a Wimbledon this season without line judges: For the first time in history there are no line judges at Wimbledon. We can't help but think the ball boys and girls do look a bit lonely all by themselves behind the baseline this year.pic.twitter.com/1kBEJD3g9i — Tennis Weekly Podcast (@tennisweeklypod)June 30, 2025 REQUIRED READING:What surface is Wimbledon played on? What to know Following Wimbledon's move to electronic line calling, the only Grand Slam event on the tennis schedule that still uses a human line judge is the French Open. "I think we are right to keep our referees and line judges at Roland Garros," French Tennis Federation president Gilles Morettontold ESPN."For Roland Garros, we want to keep our linesmen as long as the players agree with that." As noted by ESPN, the first Grand Slam that started using an electronic line calling system was the Australian Open in 2021. The U.S. Open then followed a year later. This article originally appeared on USA TODAY:Why are there no line judges at 2025 Wimbledon? What to know