The men's world No. 1 could face a two-year ban. Here's what to know about the doping proceedings against him so far

The Court of Arbitration for Sport said it scheduled a closed-doors hearing on April 16-17 at its headquarters in Lausanne, Switzerland.

Iga Swiatek, a self-described “control freak,” is taking new precautions — including holding on to extra samples of medicine she takes, in case they need to be tested at some point — after a doping case she describes as probably the worst time in her life.