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How does scoring work in tennis matches and what do 15, 30, and 40 mean in tennis scoring?

The scoring system on the ATP and WTA Tours can be a little confusing. Why does tennis count points as '15, 30, 40' and not numerically like most other sports? Points give you games, games give you ...
Time

Why Is Tennis Scored So Weirdly?

Do you have a question about history? Send us your question at history@time .com and you might find your answer in a future edition of Now You Know. All sports have their own vocabularies, the ...