It is reported by RIA Novosti with reference to the press service of the US Open.
Williams lost to Australian Ayla Tomlyanovic in the third round match.
“I thank everyone who is here, who has been rooting for me for so many years, almost decades ... It has been a fun journey, the most incredible adventure that has been in my life,” she said.
Williams has previously hinted that she may soon retire.
However, she later noted that she deliberately "talked vaguely about the end of her career."
Read more about Williams' participation in the US Open in the RT material.