A lot was on the line in the Australian Open final for Noami Osaka, but she managed to outhit Petra Kvitova, 7-6 (2), 5-7, 6-4. With her second career Grand Slam title, in a row, the 21-year-old is the the first world No. 1 to be ranked outside of the Top 50 in the rankings just a year prior.
Ranked at No. 17 just a year before reaching the top, Dinara Safina and Karolina Pliskova were the lowest players to have climbed to No. 1 in the span of a year. Just a year ago, Osaka was ranked No. 72 in the world, and has buried their record. To top it off, she's the first ever Asian world No. 1.