With World No.1 Angelique Kerber out of Oz, can No.2 Serena Williams reclaim the top spot at the Australia? Find out how right here on wtatennis.com.
WTA Staff

MELBOURNE, Australia - Serena Williams lost the No.1 ranking to Angelique Kerber at the US Open one week shy of what would have been a record-breaking 187 straight weeks atop the WTA rankings. With Kerber's 6-2, 6-3 Australian Open exit to CoCo Vandeweghe on Sunday, Serena has a chance to take it back.

The American comfortably advanced into the fourth round with a 6-1, 6-3 victory over countrywoman Nicole Gibbs, and plays No.16 seed Barbora Strycova for a spot in the quarterfinals on Monday. Kerber's loss somewhat clears the path for Williams to reclaim the No.1 ranking, but she'll still have to win the title to do it.

Taking home a seventh Daphne Akhurst Memorial Trophy would also earn Serena the distinction of a 23rd major title, breaking her present tie with Stefanie Graf and establishing an Open Era record.

Still, the American isn't out of the woods yet, as No.5 seed Karolina Pliskova and No.7 seed Garbiñe Muguruza remain in the running for the title. Though neither can claim No.1 regardless of their result in Melbourne, they could keep Kerber's ranking safe.

Should Muguruza defeat Pliskova in the final, Serena could fall as low as No.4.

Meanwhile, Vandeweghe is already set to move to a career-high ranking thanks to her second career major quarterfinal appearance:

Who will be on top of the WTA rankings when all is said and done? Stay tuned to find out as quarterfinal action continues on Monday, and catch up on all the events from week one on the latest WTA Insider Podcast: