Olympic champion Roberts ingested banned substance by kissing girlfriend

Gil Roberts

Olympic gold medallist Gil Roberts has been cleared of failing a drugs test, after it was found he ingested a banned substance by kissing his girlfriend.

The 28-year-old American, who won 4x400m relay gold at Rio 2016, tested positive for probenecid on 24 March.

Although Roberts was cleared at an arbitration hearing on 20 June, the details