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3rd November 2014
05:11pm GMT

All smiles: Wozniacki's good friend Serena Williams was on hand for race prep the night before
Wozniacki, who is currently rated as the World No. 8, said of the race: “I never tried anything this hard.”
“This is the toughest physical challenge ever. You have to keep going, keep going. I just kept grinding out there.”
It's another coup for Caroline, who appears to have flourished since her shock split from Irish golf champ Rory McIlroy.
The way they were: Caroline with former fiancé Rory McIlroy
The couple went their separate ways in May when Rory called off their engagement the week after invitations to their wedding had been issued to friends and family.
At the time, Rory said: "The problem is all mine".Explore more on these topics: