After losing in the third round of the singles competition at the US Open, Serena Williams' famous tennis career is probably ended.

a three-hour-plus 7-5, 6-7 (4), 6-1 defeat to Ajla Tomljanovic in the US Open third round.

After what was probably her final tennis match of the year on Friday night, Serena Williams delivered an emotional address.

"Thank you daddy, I know you're watching. Thanks mom," Said during her post-match on-court interview with ESPN's Mary Joe Fernandez, Williams stated just before breaking down in tears.

"Everyone that's here, that's been on my side, for so many years, decades ..."

"These are happy tears, I guess. I don't know. And I wouldn't be Serena if there wasn't Venus, so thank you Venus."

"She's the only reason Serena Williams ever existed ... It's been a fun ride. It's been the most incredible ride and journey I've ever been on."

Williams, 40, mention of her upcoming retirement from tennis in a Vogue essay that was published last month at the Canadian Open and cited her wish to have another child.

Williams expressed to the media that she will have more time to spend with her kid. and "explore a different version of Serena."

Williams nodded to the fans after thanking her opponent and momentarily covered her teary face with a towel before conducting her interview.