Blood doping boosts athletic performance by increasing the number of red blood cells in the bloodstream. Blood doping is commonly associated with endurance sports such as cycling, distance running, ...

Iga Swiatek is serving a one-month doping ban after testing positive for trimetazidine (TMZ) in August. The world No. 2 in women’s tennis — who has won five Grand Slam titles and has spent 125 weeks ...

In January 2013, the world of sports was shaken by an interview conducted by the American powerhouse broadcaster Oprah Winfrey with the cycling champion Lance Armstrong. Armstrong, who had won seven ...

The biological passport doesn’t catch cheaters red-handed but can still end careers. Here's how the controversial tool works across sport.