Monterrey Open: Garbine Muguruza defends title as Victoria Azarenka withdraws
BBC Sport website, April 8, 2019
For the nth time, ‘defend’ in this context simply means that the player is taking part in an event which she won last time. It does not imply a result one way or the other. To convey that Muguruza won, this should say that she ‘retains’ the title or ‘successfully defends’ it.