Having taken on a new adventure her retirement from tennis, WTA great Serena Williams recently admitted she still has difficulty with parent life as she raises her two children.

The 23-time Grand Slam champion welcomed her second child with husband Alexis Ohanian — daughter Adira River — who was born in August this year. The couple got married in November 2017 and are also parents to six-year-old Olympia, who was born in September that year.

The former World No.1 took to social media to state that raising two kids together was hard work, and expressed respect to parents who were in the same boat as herself, especially if one of the children was under the weather.

"Having 2 kids is definitely not easy. How do you moms/ dads do it so well!!!??? Especially when one gets sick? Mad respect,” she said in a tweet.