Soccer prediction Khachanov on doping tests: I remember one or two years they tested me the maximum number of times. About 40 times per season

World number 19 Karen Khachanov spoke about doping tests on the ATP tour. Now we see that more and more cases [related to doping] are appearing. I remember I was checked the maximum number of times for one or two years. About 40 times per season.
This irritated me greatly - checks took place almost every week. They could even check it several times at one tournament. But I`m already used to it. It has become part of the profession.
How does anti-doping work in tennis and why do players think it ruins their careers?
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