(G.N.S) DT.14 Women's world number 1 Simona Halep safely progressed into the quarter-finals with a convincing 7-5, 6-1 victory against Wang Qiang.
Meanwhile, Venus Williams survived a hard fourth round test to beat Latvia's Sevastova 7-6 (8/6), 6-4 just one day after beating sister Serena in a third round contest.
The 26-year-old Romanian showed no sign of the foot injury that forced her to withdraw from the Qatar Total Open in Doha last month and is well positioned to make a run at reclaiming the Indian Wells title she won in 2015.
No.5 seed Karolina Pliskova ended the fairytale week of the ninth 16-year-old player to make R16 at Indian Well.The Czech outclassed 6-1 7-6 (2) Amanda Anisimova, the youngest player to record a Top 10 win since 2005 when Nicole Vaidisova defeated then No.9 Nadia Petrova to win the title in Bangkok.
"There were some points where she just played and it was too good", Williams said. The Croatian tennis player's run at Indian Wells has featured a win over sixth seeded Jelena Ostapenko.
The thought of going out in the fourth round, she said in the post-match interview, got in her head so she gave Vondrousova some unexpected hope.
"It was a quick turnaround from last night when it feels like, 'Hey, this is a final to you're only in the fourth round, '" Williams said on court.
Kasatkina hit one ace, won 54 percent of her first serves and broke Wozniacki's serve six times in the one hour, 40 minute match.
To reinforce their hopes, Venus has to beat Carla Suarez Navarro or wildcard Danielle Collins in the quarterfinals. "So quite simple rule".
The 20-year-old Kasatkina improved to 11-6 on the WTA Tour season as she seeks to better her quarter-final appearance here in 2016.
Halep, a victor at Indian Wells in 2015, will play Croatia's Petra Martic in the last eight.
It was a disappointing exit for Wozniacki, who finally silenced her critics earlier this year with her maiden Grand Slam title in Melbourne, where she defeated Halep in the final. "I did exactly what he said after that". "I dominated a little bit more".
She said Serena Williams - who made her return at this year's tournament after having a baby in September - "should have been seeded number one, because she left as number one in the world". I just want to have the plan what I have to do.