World number one tennis star Serena Williams ordered coffee midway through her match against Flavia Pennetta at the Hopman Cup in Perth on Monday.
After losing the first set 6-0, the American sportswoman, who has 18 Grand Slam titles to her name, had a shot of espresso and went on to seal the victory 0-6 6-3 6-0.
"I am a coffee drinker and I didn't have mine this morning and I was just feeling it," The Sydney Morning Herald quotes Williams as saying. "So I had to get some coffee in me.
"I told them to just give me a shot of espresso. I asked them if it was legal - 'is it illegal to have a shot of espresso?' because I never did it before. I needed some espresso. I needed to wake up - the jetlag gets you all the time."
Williams ended the 2014 season by winning a fifth WTA Finals title.
