This takes sibling rivalry to a new level.
Serena Williams defeated her older sister Venus at Wimbledon on Monday!
The younger sister has already won the Australian and French Open and with the 6-4 and 6-3 win against her sister, she is now only three matches shy from her third Major title this season.
Certainly, she is excited about her success. But having to compete against her sister makes the win complicated.
Serena told the Associated Press, “It's hard to feel excited about [beating] someone you root for all the time no matter what and who you love so much and she's your best friend in the world.”
"It's never easy, but you just play for the competition and enjoy the moment,” she continued.
The Williams sisters have dominated tennis for nearly the last two decades. Each sister has won Wimbledon five times.
This year made Serena’s 18th Wimbledon. And, currently, she is the oldest woman in the competition.
"It definitely doesn't get easier,” she said. ”But today I was out there and I just thought, 'Wow, I'm 33, and she just turned 35; I don't know how many more moments like this we'll have.'"
Model Chrissy Teigen was in the crowd watching the match between the sisters. She posted a pic with her Grammy-winning husband, John Legend, on Instagram.
She captioned the pic, “Venus VS Serena! Can't believe I finally get to watch this. Bucket list!”
But there are bigger and better things on Serena’s bucket list.
If Serena wins Wimbledon and the U.S. Open this September, she will be the first woman to complete the Grand Slam since Steffi Graf took the title in 1988.
She would also tie Graf’s 22 Major championship records, which would tie Graf and Williams in second place behind Margaret Court’s record of 24 titles.