Serena is 19-12 all-time against Venus, including 11 wins in majors and a 7-2 mark in Grand Slam finals. There was a stretch from 2002-03 where the Williams sisters played each other in the championship round of five straight majors, including twice at Wimbledon.

The younger Williams last played at the 2022 U.S. Open, which was her swan song as she revealed she was "evolving" from tennis—essentially retiring. However, Williams recently posted a video of herself hitting tennis balls on a court to social media, causing fans to wonder whether she was teasing a return to the sport in some way.

Venus Williams made a winning return on Monday teaming up with compatriot Hailey Baptiste to score victory at the DC Open in Washington and among the celebrations, she took a hilarious dig at her younger sister Serena Williams.