Why isn't Serena wearing an ankle brace/support? Murray wears them always, Roddick wore them at times, Nishikori wore one last week.
Odd that she'd go the taping route considering she's rolled her ankle at least once this tournament.
Disclaimer: I'm NOT a coach...
Real tennis: https://www.youtube.com/watch?v=yDqnkLJ9BtM