20 Weeks: Serena Williams appears to hint at pregnancy with cryptic message

California: Tennis great Serena Williams hinted Wednesday that she`s expecting her first child, posting a photo of herself on Snapchat captioned "20 weeks".

The photo, captured by US media, shows Williams in a yellow swimsuit with what appears to be a baby bump.

Williams, 35, hasn`t played since beating her sister Venus in the final of the Australian Open in January to clinch a record 23rd Grand Slam singles title.

She cited a knee injury in pulling out of tournaments in Indian Wells and Miami in March.

In December she announced her engagement to Reddit co-founder Alexis Ohanian, first sharing that news on the Reddit social media site.