Daily Data Viz: The Pliskova twins are the top serving sisters in tennis

While many may tout Serena and Venus Williams as the best sister duo, Karolina and Kristyna Pliskova are the WTA's top serving sisters.

Move over Venus and Serena, there’s a new hard serving duo in the women’s game. While the Williams sisters have hit a combined 355 aces on the WTA Tour in 2016, the Pliskova twins have hit 571 total aces.

Karolina is the 6’1” right-hander while Kristyna is the 6’0” lefty. Karolina is ranked No. 11 in the world and just won the WTA event in Cincinnati, earning wins over World No. 3 Garbine Muguruza in the semifinals and World No. 2 Angelique Kerber in the final. Kristyna has been ranked as high as No. 83 in the world and has the WTA record for most aces in a match (31 in her second round match at the Australian Open this January). How prolific are these two? Of the top 10 matches with the most number of aces hit in 2016, the Pliskova twins have seven of them. Karolina leads the WTA tour with 407 aces in 45 Tour matches (just over nine aces per match). Kristyna is ninth with 164 aces in 15 WTA Tour matches (just under 11 aces per match).

Check SI.com's 2016 U.S. Open data hub page throughout the whole tournament for the latest data-driven infographics and charts from IBM, the official technology partner for the U.S. Open. IBM captures and analyzes the data that powers all of the Grand Slams, as well as the digital platforms that extend the experience to fans around the world.