The Williams sisters remain formidable challengers at Wimbledon, even with a collective age of 90. Having already secured 21 combined titles on the historic grass courts of the All England Club across their singles and doubles play, Serena, 41, and Venus, 46, are now pursuing yet another championship.

Wimbledon, which begins in less than two weeks, announced on June 16 that the sisters would receive an invitation to a doubles wild card, according to the Associated Press.

“Back together, at Wimbledon,” the tournament page wrote on Instagram on Tuesday.

After a nearly four-year break, Serena just started playing tennis professionally again. Essence reports that the comeback got off to a good start because the tennis legend, partnered with world No. 9 Victoria Mboko, defeated third seeds Nicole Melichar-Martinez and Erin Routliffe 7-6, 6-2 in their first match. 

READ ALSO: Serena Williams addresses whether she’ll return to playing singles as she trains for tennis comeback 

Unfortunately, Mboko’s knee injury during a singles match forced the doubles team to withdraw, ending their winning run. Williams is off to a good start, though. 

“I think it’s going to be fun. My daughter, Olympia, told me I should play with Venus. She’s always right,” Serena said after losing a doubles match with another partner, Karolina Muchova, in Berlin on June 16.

“So I said, “OK Olympia, we’ll see if we can do it.”

However, Venus, who continues to compete occasionally, turned 46 on June 17.

Over their illustrious careers, the legendary pair has amassed an incredible 14 Grand Slam doubles titles. They have won six grass-court championships, starting with their first in 2000 and ending with their most recent victory in 2016. 

Their dominance at the All England Club is especially remarkable. Notably, they entered the tournament as wild cards and won their first two Wimbledon titles in 2000 and 2002.

READ ALSO: Serena Williams responds to tennis comeback rumors 

Their combined accomplishments at the All England Club are nothing short of legendary. Serena has won seven Wimbledon singles titles, while Venus has won five.

Serena won a gold medal in singles at the 2012 London Olympics, while both sisters shared gold in doubles.

Meanwhile, Serena continued her return to the sport on Tuesday as she competed in the women’s doubles at the Berlin Open alongside Karolina Muchova.

After the match at Queen’s Club in west London, Williams said she was taking things “a day at a time” but said she enjoyed the winning return to competitive action.

“I don’t know. I had nothing better to do. I got tired of sitting at home. My kids are out of school for the summer, so why not?” Williams said. “I never got to play here; it was always just the men. It feels really special to play somewhere so iconic.”

READ ALSO: Venus Williams becomes oldest player to compete in Australian Open women’s singles draw