Australian Open

Serena Williams shares photo of daughter Alexis Olympia Ohanian Jr.

Serena Williams shares photo of daughter Alexis Olympia Ohanian Jr.

Serena Williams says on social media that she gave birth to a baby girl named Alexis Olympia Ohanian Jr.

The tennis star posted about the birth on her Instagram and Twitter accounts. The baby's father is Reddit co-founder and former Columbia resident Alexis Ohanian, the baby's namesake. 

She says the baby was born on Sept. 1 and weighed 6 pounds, 14 ounces. One posting also says about the newborn, "Grand Slam Titles: 1."

The 35-year-old Williams won her 23rd Grand Slam singles title at the Australian Open in January — while she was pregnant.