Daily Data Viz: How Kerber defeated Serena in Australian Open final

Unforced errors were the key stat in Serena Williams's loss to Angelique Kerber in the Australian Open final.

Germany's Angelique Kerber stunned World No. 1 Serena Williams in the Australian Open final on Saturday, preventing her from winning her 22nd Grand Slam singles title and tying Steffi Graf's record of the same mark. Serena had won three of the previous four majors and was the defending champion in Melbourne, but first-time Slam finalist Kerber came out firing and was able to take the opening set, marking the first time Serena dropped the first set in a Grand Slam final since the 2011 U.S. Open.

The key stat for the match was the unforced errors category, where Serena hit 46 compared to Kerber's 13.

Check SI.com's Australian Open Daily Data Viz 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.