There's never a bad time to tease your siblings. Naomi Osaka proved as much Wednesday, using her win over Serena Williams at the Australian Open to embarrass her sister on national television.
After meeting with Williams in the middle of the court, Osaka walked over and wrote a message on a camera before leaving the court. It was a lengthy message. Was she writing a heartfelt note to Williams? What about an encouraging message to young tennis players all around the world?
Nope. Osaka took the opportunity to tell her sister Mari to stop being weird.