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Tour-wide adoption of Electronic Line Calling Live (ELC Live) will be from 2025
The ATP has announced Tour-wide adoption of Electronic Line Calling Live (ELC Live) from 2025. The advanced officiating technology covers all court lines for ‘out’ calls throughout matches, a role traditionally carried out by on-court line judges.

This significant officiating update follows several seasons during which a combination of ELC Live, ELC Review and on-court line judges has been used at ATP Tour events. The move is set to optimise accuracy and consistency across tournaments, match courts and surfaces, for players competing in both main draw and qualifying events. The decision was supported by extensive research conducted by ATP across tennis stakeholders, including fans, which identified accuracy and consistency as the most important factors in assessing different line-calling systems.

All-court ELC Live coverage will also deliver comprehensive player and ball tracking across the whole Tour, leading to an unprecedented level of data for player-performance analysis and the development of new statistics in the game in collaboration with Tennis Data Innovations (TDI), in addition to future commercialisation opportunities.

Andrea Gaudenzi, ATP Chairman, said: “This is a landmark moment for our sport, and not one we’ve reached without careful consideration. Tradition is core to tennis and line judges have played an important part in the game over the years. That said, we have a responsibility to embrace innovation and new technologies. Our sport deserves the most accurate form of officiating and we’re delighted to be able to deliver this across our whole Tour from 2025.”

ELC Live was first trialled at the Next Gen ATP Finals in 2017 in Milan as part of a raft of ambitious technological innovations, several of which have gone on to be implemented on the main Tour. In recent years, the system has been available for tournaments on a voluntary basis, becoming widely adopted since the COVID-19 pandemic.

Multiple suppliers are currently approved to provide ELC Live technology on hard court and on grass, while final testing is underway for clay. It is anticipated that multiple different suppliers will be approved across the various court surfaces from 2025.

Tour-wide adoption of Electronic Line Calling Live (ELC Live) will be from 2025
The ATP has announced Tour-wide adoption of Electronic Line Calling Live (ELC Live) from 2025. The advanced officiating technology covers all court lines for ‘out’ calls throughout matches, a role traditionally carried out by on-court line judges.

This significant officiating update follows several seasons during which a combination of ELC Live, ELC Review and on-court line judges has been used at ATP Tour events. The move is set to optimise accuracy and consistency across tournaments, match courts and surfaces, for players competing in both main draw and qualifying events. The decision was supported by extensive research conducted by ATP across tennis stakeholders, including fans, which identified accuracy and consistency as the most important factors in assessing different line-calling systems.

All-court ELC Live coverage will also deliver comprehensive player and ball tracking across the whole Tour, leading to an unprecedented level of data for player-performance analysis and the development of new statistics in the game in collaboration with Tennis Data Innovations (TDI), in addition to future commercialisation opportunities.

Andrea Gaudenzi, ATP Chairman, said: “This is a landmark moment for our sport, and not one we’ve reached without careful consideration. Tradition is core to tennis and line judges have played an important part in the game over the years. That said, we have a responsibility to embrace innovation and new technologies. Our sport deserves the most accurate form of officiating and we’re delighted to be able to deliver this across our whole Tour from 2025.”

ELC Live was first trialled at the Next Gen ATP Finals in 2017 in Milan as part of a raft of ambitious technological innovations, several of which have gone on to be implemented on the main Tour. In recent years, the system has been available for tournaments on a voluntary basis, becoming widely adopted since the COVID-19 pandemic.

Multiple suppliers are currently approved to provide ELC Live technology on hard court and on grass, while final testing is underway for clay. It is anticipated that multiple different suppliers will be approved across the various court surfaces from 2025.