On the WTA tour, Serena Williams is known for her powerful serve. However, at this year's Australian Open, other players have stepped up their serving game, in comparison with their respective tour serving stats. While Serena's numbers are close to or below her tour averages, Venus Williams is serving strong, as she has revived her game thus far in 2015, and Agnieszka's Radwanska's serve performance is dramatically higher.
Check SI.com's Australian Open Daily Data Visualizations hub page throughout the whole tournament for the latest data-driven infographics and charts from IBM, the official technology partner for the Australian 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.