Serena Williams will play alongside older sister Venus in the US Open doubles in what will be the final tournament of her career.
The Williams sisters have won 14 major doubles titles and three Olympic gold medals together.
Serena Williams, 40, says she will retire after the US Open, which starts in New York on Monday.
As well as playing in the singles, she has been given a wildcard to play with her 42-year-old sister in the doubles.
The pair have not played doubles together since the 2018 French Open, when they lost in the third round.
Their first Grand Slam title together came at the 1999 French Open, and they won their 14th at Wimbledon in 2016.
