Madison Keys makes her 2017 debut and Venus Williams takes on the BNP Paribas Open’s longest tenured player. We break down today’s key second-round matchups at WTATennis.com.

Saturday, Second round

[2] Angelique Kerber (GER # 2) vs. Andrea Petkovic (GER # 79)
Head-to-head: Kerber leads, 7-3
Key Stat: Kerber will begin her 21st week at No.1 on the Monday after Indian Wells.

As a result of Serena Williams’ injury withdrawal, Angelique Kerber will make her return to the top of the WTA rankings following Indian Wells no matter how she fares. But the German is adamant about not letting this good news cause any complacency in her tennis. She’s here to compete, and to hopefully kickstart a season that hasn’t panned out exactly the way she would have liked in the first two months. Kerber is 7-5 on the season, but she has yet to reach a final and she has gone 2-5 against the Top 50. “I was coming here to win matches,” Kerber told reporters on Wednesday. “This is what I love and this is what I was practicing for the last weeks. This is more what I’m focusing on. I will try and really stay with my focus because this is my priority and I will try now not to think about getting No.1 again.”

Kerber is set to square off with compatriot Andrea Petkovic for the 11th time on Saturday. The pair will meet for the first time since 2015, when Kerber won a straight-setter in the Charleston semis.

Pick: Kerber in three

[12] Venus Williams (USA # 13) vs. Jelena Jankovic (SRB # 51)
Head-to-head: Jankovic leads, 7-6
Key Stat: Jankovic is making her record 16th appearance at the BNP Paribas Open.

A pair of legendary thirtysomethings will lock horns for the 14th time on Saturday for a spot in the third round when Venus Williams and Jelena Jankovic continue a rivalry that started over a decade ago in the quarterfinals at the 2005 Bank of the West Classic in Northern California. A lot of time has passed since then, but Williams (36) and Jankovic (32) continue to turn back the clock with brave tennis, big personality and an unquenchable lust for the competition that exists on tour. Williams made her return to Indian Wells for the first time in 15 years last season but was upset in her first match by Japan’s Kurumi Nara. She’d like to extend her stay a little longer this time, but she’ll have her hands full with Jankovic, who took the pair’s last hardcourt meeting at Hong Kong in 2015.

While Williams may still be re-familiarizing herself with the playing conditions in the desert, Jankovic has played some of her best tennis here. She won the title in 2010 and reached the final in 2015.

Pick: Williams in three

[20] CoCo Vandeweghe (USA #22) vs. Lucie Safarova (CZE # 40)
Head-to-head: Safarova leads, 2-1
Key Stat: After finishing 2016 with five consecutive losses, Vandeweghe is 8-3 in 2017.

American CoCo Vandeweghe was a set away from her first career Grand Slam final before she fell to Venus Williams in a thrilling three-setter at the Australian Open semifinals this winter. Now she’s looking to make some noise on her home soil, but the California native will have to get past a very accomplished veteran if she hopes to reach beyond the third round for the first time. Lucie Safarova has been playing very solid tennis this season, and has a final at Budapest and an 11-5 record to show for it. She has taken her last two meetings with Vandeweghe, both on hard courts, but the American is a more confident player than she ever has been before.

Pick: Safarova in three

[9] Madison Keys (USA # 9) vs. Mariana Duque-Mariño (ESP # 112)
Head-to-head: Keys Leads, 1-0
Key Stat: Keys has never been past the third round at Indian Wells.

Madison Keys will make her return to the tour after missing the first two months due to a minor wrist surgery. Keys has also been reunited with former coach Lindsay Davenport, and the pair will move forward hoping to recreate the success that they achieved in 2015, when the American reached her only career Grand Slam semifinal at the age of 19. For her first hurdle she’ll face Spain’s Mariana Duque-Mariño, a 27-year-old qualifier who earned her first ever BNP Paribas Open main draw win on Thursday when she defeated Romania’s Patricia Maria Tig.

The matchup is a good one for Keys, but how quickly can the 22-year-old shake off the rust that surely exists? In her first match since last October Keys will need to be sharp—Duque Mariño has already won two rounds of qualifying in addition to her first-round win and she’ll be hungry for the upset.

Pick: Keys in two

By the Numbers:

36 – The age of Venus Williams, who is the oldest player in this year’s BNP Paribas Open draw.
20 – Amount of weeks that Kim Clijsters and Angelique Kerber have spent at No.1 as of today. Kerber will pass Clijsters when she begins her second stint at the top of the rankings on Monday March 20th.
47 – Number of BNP Paribas Open matches won by Lindsay Davenport, which is most all-time. The American also holds the record for most final appearances with six.
28 – Agnieszka Radwanska leads all players in this year’s draw with 28 wins at Indian Wells. She’ll bid for her 29th against Spain’s Sara Sorribes Tormo today.