Doping

Aleksandr Krushelnitckii finished third in the mixed-doubles curling tournament, competing with his wife and teammate, Anastasia Bryzgalova. Now he's the subject of an investigation.

Aleksandr Krushelnitckii's second sample will be tested Monday. He's accused of taking meldonium — the same drug that got tennis star Maria Sharpova banned back in 2016.

The Court of Arbitration for Sport that heard the appeals said there was insufficient evidence of doping and overturned their lifetime Olympic bans. Eleven others saw their bans reduced.

More than 30 athletes who were to compete at the Siberian Indoor Championships last weekend suddenly pulled out of the event claiming various illnesses.

The World Anti-Doping Agency says Russia's official sports drug-testing lab doesn't meet guidelines, placing in doubt the country's participation in the Winter Olympics.

The World Anti-Doping Agency says the "enormous backup file" covers more than three years of testing data from the Moscow Laboratory. The database was reportedly provided by a whistleblower.

Under pressure from competitors, the race committee said the 30-year-old musher is under suspicion of giving his dogs the drug tramadol in this year's race. Seavey has denied any wrongdoing.

The International Association of Athletics Federations found Russia had not reformed its state-sponsored track and field programs sufficiently to warrant reinstatement into international competition.

The tennis star was suspended from international competition after testing positive for the banned drug meldonium. She will be eligible to play again beginning in April 2017.