'My aura is what makes me great,' says Serena

Serena Williams believes there is an "aura" surrounding her when she plays and has no hesitation in describing herself as "great".

The 36-year-old American was reacting to US compatriot Madison Keys claiming that "it must suck" being Williams as every woman wants to claim her scalp.

"I'm glad someone admitted that," said Williams who stayed on course for an eighth Wimbledon title on Friday with a 7-5, 7-6 (7/2) win over France's Kristina Mladenovic.

"Every single match I play, whether I'm coming back from a baby or surgery, it doesn't matter, these young ladies, they bring a game that I've never seen before.

"It's interesting because I don't even scout as much because when I watch them play, it's a totally different game than when they play me.

"That's what makes me great: I always play everyone at their greatest, so I have to be greater."

Williams, 36, is playing just her second Grand Slam since the birth of her daughter Olympia in September last year.

She made the last 16 at the French Open before a pectoral injury forced her to pull out.

She is back in the fourth round of Wimbledon where she will face Russian qualifier -- and fellow mother -- Evgeniya Rodina on Monday.

"Yeah, there's definitely that aura, that kind of thing of playing Serena," added the American.

"At the same time these women are proud. They don't go out there and say, I'm going to lose because I'm playing Serena.

"They go out there and say, I'm going to play hard because I'm playing Serena."

Keys, who was knocked out by Rodina 7-5, 5-7, 6-4 despite having led 5-2 in the first set, admitted she had let her mind wander to what it would be like having to face Williams in the next round.

While she was day-dreaming, world number 120 Rodina pounced.

"It must suck every match," said Keys when asked what it must feel like being Williams and spending the best part of two decades being hunted down by rivals.

"It just gives even more props to her."