In the latest edition of Second Serve, our weekly snapshot of the tours, BBC tennis reporter Jonathan Jurejko looks at the surprise return of Venus Williams, one of the sport's biggest names, at the age of 45.
The Williams sisters have rarely done anything conventionally in their stellar careers.
So perhaps we should not be surprised that Venus Williams - the seven-time major champion and older sister of the iconic Serena - is stepping out onto a professional court again this week at the age of 45.