Serena Williams' story of motherhood is also a story of survival. In 2017, the tennis icon won the Australian Open while eight weeks pregnant, then nearly died after giving birth to her daughter, Alexis Olympia Ohanian Jr. An emergency C-section was followed by a pulmonary embolism, more surgery and six weeks confined to bed. Yet barely a year later she was back contesting Grand Slam finals, and her journey stands as one of the most inspiring comebacks in the history of sport.