Serena Williams has revealed she was still suffering from the after effects of food poisoning throughout her Australian Open quarter-final victory over Maria Sharapova.
American Williams has now won her last 18 matches against Sharapova and has not lost to the Russian since 2004, following the 6-4 6-1 victory.
However, the world No1 struggled at times during the first set, having been broken early on, but recovered to power into the semi-final.
“I was a little lethargic. It was maybe just a problem getting out to a faster start, like I had been in all the rest of my matches,” Williams said.
“I was just dealing with some food poisoning issues from a few days ago. That was it.
“It was super intense, she’s an incredibly intense, focused player, she’s won so many Grand Slams for a reason. When you’re playing someone like that who is so great you have to play with fire and intensity.
“I’ve been playing this week aggressive and I didn’t start that way so after the first set I just wanted to play the way that got me to the quarter finals.”
Williams will face Agnieszka Radwanska, who eased past Carla Suarez 6-1 6-3, in the semi-final.
The duo are good friends and Williams is expecting the tie to be played in good nature.
“I know Aga really well. She’s a really nice girl. She goes out of her way to say ‘Hi’. It’s really cool. We always get along,” she added.
“She’s great. Whoever wins, we both deserve to be in the final. If she wins, I’ll be very happy for her. I’m sure she’ll feel the same way.”
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