The BNP Paribas Open caused some seismic shifts to the Road to Singapore leaderboard; while Australian Open champion Angelique Kerber remained atop the standings, No.2 Serena Williams and No.3 Victoria Azarenka are hot on her heels as the tour turns to the Miami Open.

Kerber suffered a second straight WTA loss in the second round of Indian Wells, losing a tight contest to Denisa Allertova. By contrast, Williams and Azarenka made it all the way to the final, with the Belarusian winning her fourth career match over the 21-time Grand Slam champion and her second title of the season after the Brisbane International.

Not far behind is reigning BNP Paribas WTA Finals Singapore presented by SC Global champion Agnieszka Radwanska; the new WTA World No.2 reached another big semifinal in Indian Wells, narrowly losing to Williams in two tough sets. Drawn to face the American again in the semifinals, Radwanska rounds out the Top 4 on the RTS Leaderboard.

Qatar Total Open champion Carla Suárez Navarro saw her progress on the RTS Leaderboard stunted when a right ankle injury took her out of Indian Wells, while a left foot injury caused St. Petersburg Ladies Trophy winner Roberta Vinci into retiring in the fourth round – leaving the veterans at No.5 and No.6 respectively.

Johanna Konta took out Allertova en route to the second week, losing a three-setter to eventual semifinalist Karolina Pliskova; the Australian Open semifinalist not only became the highest-ranked British woman since 1987 (Jo Durie), but she also kept ahead of No.8 Belinda Bencic, who dropped out in the third round to Magdalena Rybarikova.

An upper respiratory illness likely kept Dubai Duty Free Tennis Championships runner-up Barbora Strycova from making a bigger leap; already moving up three spots to No.9, the Czech veteran retired down a set to Simona Halep, whose own run saw her jump nearly 50 spots and into the Top 40.

Meanwhile, Co-No.1s Martina Hingis and Sania Mirza retained the top spot on the RTS Leaderboard in doubles, while Bethanie Mattek-Sands and CoCo Vandeweghe debuted at No.7 following their championship win over Pliskova and Julia Goerges, who are all the way up to No.4 with two strong results in Melbourne and Indian Wells.

Click here to see the singles and doubles leaderboards heading into the Miami Open.