By Michael Klopman

How's this for a winning serve? On Wednesday, tennis superstar Serena Williams appeared to announce on Snapchat that she's 20 weeks pregnant.

The post (which was later deleted) comes just a few months after Serena and Alexis Ohanian, a Reddit co-founder, got engaged. On top of that, several people out there who can do math realized that because Williams is 20 weeks into her pregnancy, that means she won the 2017 Australian Open -- beating her sister Venus in the finals for her record 23rd grand slam singles title -- early in her pregnancy.

While the 35-year-old Williams is far from the first female athlete to compete while pregnant, actually winning is another story. Back at the 2012 London Olympics, beach volleyball player Kerri Walsh Jennings of Team USA was five weeks into her pregnancy when she won the gold medal

Perhaps unsurprisingly, many couldn't help but focus on the fact that Serena won a grand slam while pregnant when they reacted to the news on Twitter.