Alexis Ohanian Welcomes Serena Williams Back to Tennis With Cute Billboards Ohanian bought the four billboards, which run alongside the Palm Springs highway in the lead-up to Williams' return to tennis at the BNP Paribas Open in Indian Wells, California, next week. Williams, 36, gave birth to a baby girl, Alexis Jr., last September. She hasn't competed since the 2017 Australian Open, which she won while she was eight weeks pregnant with her baby.