"I will focus on getting better and start preparing for Miami", she said, referencing next week's Miami Open. She went back out and lost the first game of the second set.
Serena Williams's first tournament since the Australian Open came to an abrupt end on Sunday as the ailing 23-time Grand Slam champion retired from her third-round WTA match against Garbine Muguruza at Indian Wells.
Ranked 36th in the world, Williams endured three sets in her first two matches.
With the former world number one's groundstrokes failing her, Kozlova reeled off 11 of the next 12 points, breaking back for 5-5 with a forehand victor.
"By the score it might have looked like I started well, but I was not feeling at all well physically".
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It was the same outfit she wore for her arrival in New Zealand in 2014 but with a slightly different style hat. Pregnant women sometimes have to remove their rings if their hands swell in their final trimester.
Williams started the match well against Muguruza and lead 3-0.
"It was really hard against her because I never played against her - it was a bit hard to get a rhythm", Halep said. As long as Venus has her return working and is spraying winners, you can live with an inconsistent serve and a higher number of break points.
Williams, who made the semifinals in the desert a year ago, was playing McHale for the first time.
Muguruza said it felt like a hollow victory.
The result saw Muguruza set up a fourth-round meeting with Kiki Bertens, the seventh seed who overcame Konta 7-6 (12-10) 6-4. The former World No.1 extended her lead even further by breaking McHale at love for a 5-1 lead, punctuating that game with a bruising forehand service return for a clean victor. The next was the 2016 French final, where Murguruza won 7-5, 6-4.