Dutee Chand had claimed before NADA's Anti-Doping Disciplinary Panel (ADDP) that it was a case of "unintentional consumption".
Four Indian quarter-milers running below 53 seconds augurs well for the country's hopes of winning six straight Asian Games gold in women's 4x400m relay since 2002.
The United States set a world record of three minutes and 50.40 seconds in the women's 4x100m medley relay final at the world championships on Sunday.
Indian long-distance runners Kartik Kumar and Gulveer Singh bagged a silver and bronze medal respectively in the men's 10000m race with personal best times at the Asian Games in Hangzhou on Saturday.
Australia's Kyle Chalmers set a blistering pace towards the end to win gold in the blue riband men's 100 metres freestyle at the World Aquatics Championships.
Because billions of people around the world will be watching these brand ambassadors, what they wear during the Olympics is highly regimented, leading to complicated wardrobe changes.
Noah Lyles is the first man since Usain Bolt in 2015 to win the sprint double.
It was "incomprehensible" that Real Madrid paid Tottenham Hotspur 100 million euros to sign forward Gareth Bale as no player is worth that amount of money, former France striker Zinedine Zidane said on Sunday.
Buoyed by the record medal haul at the Hangzhou Asian Games, Indian Olympic Association (IOA) president PT Usha on Sunday supported the government's plan to place a proposal to host the 2036 Olympics.
The 2023 World Athletics Championships kicked off in Budapest on August 19.
Shot putter Karanveer Singh will be pulled out of the Indian team for the Asian Athletics Championships in Bangkok starting next week.
Asafa Powell equalled the second fastest time ever over 100 metres when he clocked 9.72 seconds at the Lausanne grand prix.
The two fastest 100 metres sprinters, Usain Bolt and Asafa Powell, could race in Jamaica later this month.
Forty years after its first edition, the world athletics championships get underway in Budapest on Saturday with over 2,000 athletes from 202 countries taking part over nine days of what could be record-breaking action.
Olympic champion Shelly-Ann Fraser-Pryce gave Jamaica a 100 metres double, comfortably winning the women's final in Moscow on Monday. The title favourite never looked troubled as she clocked 10.71 seconds.
Ugandan smashed Bekele's 16-year-old record at Monaco Diamond League on Friday.
Becomes first Indian to bag a gold medal at the World University Games
Sifan Hassan of the Netherlands broke the 23-year-old women's mile world record on Friday when she clocked four minutes 12.33 seconds in a race dedicated to former American runner Gabe Grunewald, who died from cancer last month at the age of 32.
'A medal would have been great but I was very proud of myself that I could make it happen. 2018 was the fastest year of my life, I got my best time in 50m freestyle and butterfly. I was pretty fast in the 100m freestyle as well. But not having a medal made me a better and tougher person.'
Delhi High Court clears Indian judoka Jasleen to compete at CWG
Build-up hit by pull-outs and dope flunks, India still hopeful of good show in Asian Athletics Championships from Wednesday
The Athletics Federation of India (AFI) on Thursday named a 37-member Indian athletics team, to be led by Olympic champion javelin thrower Neeraj Chopra, for the upcoming Commonwealth Games.
Italians across the country hailed a great summer, during which they also won the European soccer championship and the Eurovision song contest.
Gatlin stormed to the lead in the final 20 metres and defeated favoured youngster Christian Coleman in the 100 metres final at the US nationals/world championships trials on Friday.
Chopra opened the competition with an effort of 83.03m before having two foul throws. After a fourth throw of 83.36m, Chopra sent the javelin to 88.07m amid loud cheers from a sizeable audience at the NIS Patiala.
Shikha finished 41st in the qualifying rounds of the event with a timing of 1 minute, 7.82 seconds.
India sprinter Dutee Chand has tested positive for prohibited anabolic steroids during an out-of-competition testing and has been provisionally suspended.
CWG-bound sprinter Dhanalakshmi and triple jumper Aishwarya Babu fail dope test
Prachi Yadav became the first Indian to win a para canoe gold in the Asian Para Games.
Karnataka swimmer Aaron Agnel D'Souza on Sunday bettered his personal national record in the 100m freestyle event in the 65th Senior National Aquatics Championships which drew to a close in Ranchi on Sunday.
World champion Tyson Gay failed to qualify for the 100 meters final at the Beijing Olympics on Saturday.
Jamaica's triple Olympic champion Usain Bolt believes he can take the 100 metres world record down to 9.58 seconds and go below 19 seconds in the 200 metres.
Shot putter Manpreet Kaur smashed an 18-year-old national record to win gold and qualify for next year's Olympics as Railways dominated the show on the opening day of the 55th National Open Athletics Championships in Kolkata.
Parul Chaudhary became only the second Indian female athlete to qualify for the final of a track event at the World Athletics Championships.
Olympic champion Katie Ledecky stormed to a fifth straight 800m freestyle title at the swimming World Championships in Budapest on Friday while home favourite Kristof Milak added to his 200m butterfly crown with victory in the 100m butterfly.
American sprinter Tyson Gay notched the world's best 100m record of 2011 with a 9.79sec run at an event in Clermont, Florida.
Tyson Gay sent a message to missing rivals Usain Bolt and Asafa Powell with victory in the 100 metres at the London Diamond League meeting on Friday in a world leading time of 9.78 seconds.
Britain's James Guy held off a host of Olympic champions to win his first world title, the men's 200m freestyle, at the world championships on Tuesday.
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