Khairi Ishak has been banned for four years after a positive dope test.
    Team Singapore

    Para-sprinter Khairi handed four-year ban

    Sharapova wins first title in two years
    Tennis

    Sharapova wins first title in two years

    Sharapova should 'start from bottom'
    Tennis

    Sharapova should start from bottom: Wozniacki

    Michael Phelps frustrated by Rio doping fears
    Swimming

    Phelps frustrated by Rio doping fears

    Russia's ban extended to August's world meet
    Athletics

    Russian athletes' ban extended to August's world meet

    European athletics body steps up against doping cheats
    Athletics

    European athletics body steps up against doping cheats

    Sevilla's Samir Nasri (L) vies with Celta Vigo's Gustavo Cabral during the Spanish league football on December 11, 2016
    Football

    Nasri in danger of breaching anti-doping rules

    Russian officials admit to doping 'conspiracy'
    Sports

    Russian officials admit to doping ‘conspiracy’

    'Mystery package was flu treatment'
    Sports

    'Mystery package was flu treatment'

    Salt and coffee used to change failed samples
    Sports

    Salt and coffee used to change failed samples