Quiz Serena Williams won which Grand Slam title in 2017, during the early stages of her pregnancy? Mukesh Sharma - May 9, 2021 0 Amazon Mothers Day Quiz. Options for question – Serena Williams won which Grand Slam title in 2017, during the early stages of her pregnancy? Australian Open French Open Wimbledon US Open The answer is the Australian Open. Serena Williams won the Australian Open Grand Slam title in 2017, during the early stages of her pregnancy.