The 2019 Australian Open is onto the second week, with just 16 players remaining in both the men's and women's draws. The top seeds have largely held their own thus far down under, as three of the four top-seeded women remain in the draw while all of the top-four men's seeds remain. The second week promises to deliver marquee matchups, tight matches and memorable moments.
Here's an updated list of matchups for the round of 16.
No. 1 Simona Halep vs. No. 16 Serena Williams
Head-to-head record: Williams leads 8-1. Most reccent matchup came in the quarterfinals of the 2016 U.