Where does this come from, and can I check it?

Electronic calling took over every court after nearly 150 years of human calls. The figure is taken from Wimbledon, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a sports fact?

Yes. It sits on the Sports shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Wimbledon replaced its line judges in 2025

Electronic calling took over every court after nearly 150 years of human calls The All England Club announced the change in 2024 and used automated line calling throughout the 2025 championships. The system uses a network of cameras to track the ball and calls out in real time. The other Grand Slams had already moved to electronic calling on most or all courts. It sits in Mondo's sports collection, one of 200 facts that each trace back to the reference below.

Where this comes from

Wimbledon

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Technology trivia

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Tags: tennis, technology, wimbledon

Wimbledon replaced its line judges in 2025: the short answers

Where does this come from, and can I check it?: Electronic calling took over every court after nearly 150 years of human calls. The figure is taken from Wimbledon, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a sports fact?: Yes. It sits on the Sports shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.