INDIAN WELLS, CA, USA – Upsets reigned supreme in the top half of the draw on Friday at Indian Wells, with seeds going only 7-9. Will the chaos continue on Sunday? We preview today’s third-round matchups here.

Sunday, Third Round

[1] Serena Williams (USA # 1) vs. Yulia Putintseva (KAZ # 56)
Head-to-head: Williams leads 1-0
Key Stat: Williams will bid for her 20th career win at Indian Wells against just one loss.

After her second-round victory over Laura Siegemund of Germany, Williams admitted that she’s a lot less nervous than she was last year, when she ended her boycott and played in the desert for the first time since 2001. “I was really kind of stressed out last year,” Williams told reporters. “It was a lot of emotions last year. This year it was a lot easier. I mean, obviously there is still something there, but it’s a lot easier to just deal with everything.” A more relaxed Williams could spell big trouble for Yulia Putintseva, but don’t expect the 21-year-old to lay down and play dead. She’s as fiery as they come and she’ll come out ready to take her shots at the World No.1.

Pick: Williams in two

[3] Agnieszka Radwanska (POL #3) vs. [32] Monica Niculescu (ROU # 34)
Head-to-head: Radwanska leads, 2-1
Key Stat: Radwanska has reached the semis in all three events she has played in 2016.

Radwanska saved a match point in making a valiant comeback to dispatch Dominika Cibulkova on Friday. Next up, she’ll face a fellow slice-and-dicer in the quirky Monica Niculescu, who took out Heather Watson to reach the third round at Indian Wells for the first time. Though Radwanska comes in as the heavy favorite, Niculescu comes in with good form, having notched wins over Petra Kvitova, Sabine Lisicki and Jelena Jankovic this season.

Pick: Radwanska in two

[5] Simona Halep (ROU #5) vs. [30] Ekaterina Makarova (RUS # 32)
Head-to-head: Halep leads 2-1
Key Stat: Defending champion Halep was the WTA’s hardcourt match win leader in 2015 (41-11).

Jazzed after an inspiring hitting session with Andre Agassi and Steffi Graf in Las Vegas last week, Simona Halep came out and blitzed Vania King to reach the third round. But the competition stiffens for the Romanian on Sunday as 30th-seeded Ekaterina Makarova steps up. Halep owns the head-to-head edge over the Russian but Makarova won their biggest match to date at the 2015 Australian Open. To be honest, neither player has played anywhere near their potential this year, but a big win on Sunday could do a lot for the confidence of either player.

Pick: Halep in three

[8] Petra Kvitova (CZE # 8) vs. Johanna Larsson (SWE # 66)
Head-to-head: Kvitova leads 2-0 (both meetings Challenger-level)
Key Stat: Kvitova has fallen against players ranked outside the Top 50 at her last two tournaments (Dubai/Brengle, Doha/Ostapenko).

Petra Kvitova narrowly avoided the upset in defeating Montenegro’s Danka Kovinic in a third-set tiebreaker on Friday, and on Sunday she’ll look win back-to-back matches for the first time in 2016. The serve is the glue that generally holds the Kvitova game together, but in her last two matches the Czech has faced 26 break points. That’s too many. Kvitova will have to take command of her service games to go deep into the tournament, but if she can tighten up her game she may be able to ride her favorable draw all the way to the semis or beyond.

Pick: Kvitova in two

[19] Jelena Jankovic (SRB #19) vs. CoCo Vandeweghe (USA # 38)
Head-to-head: Tied, 3-3
Key Stat: 2010 champion Jankovic snapped a three-match losing streak versus Vandeweghe with a straight-sets win in Sydney over the American in January.

CoCo Vandeweghe is a bit of a wild card, and she can be prone to inconsistency. But when the hard-serving 24-year-old is on, she can be a terror to face. On Sunday the American will try to get past last year’s runner-up Jelena Jankovic, but beating the Serb in the desert has always proven to be a difficult task. Jankovic owns 24 career wins here, but she’s struggled to find her form thus far in 2016, going 5-7. Meanwhile, Vandeweghe has won six of eight matches—three of which came against Top 20 opposition—since dropping her first three tilts of the season.

Pick: Vandeweghe in three

-Chris Oddo, wtatennis.com contributor