For the unsinkable Serena Williams, the last step is proving the hardest

Coming back from childbirth was always going to be her biggest challenge, but the baggage of trying to become the all-time great is proving a formidable haul even for Serena Eight years ago, the documentary Venus and Serena followed the Williams sisters as they tried to survive the nadir of their careers. Venus prepared to do battle with Sjogren's syndrome, while Serena plotted her way back from the first pulmonary embolism that had nearly killed her. During a quiet moment of the documentary, a ...