( CNN ) -- A jet lagged Serena Williams skipped any New Year celebrations for a good night 's sleep after starting her 2014 WTA campaign in Brisbane Tuesday with a win over Andrea Petkovic . The top seed was extended by her German opponent before winning the second round match in straight sets , 6-4 6-4 and admitted she was heading to her hotel for an early night . `` I do n't celebrate New Year 's Eve , so usually I 'm in bed at midnight , '' Williams told the WTA official website . `` I always hear the fireworks though . They wake me up at midnight . Hopefully I can sleep through them tonight . `` I 'm a very serious player . I never leave my room during a tournament , so I 'm not going out , '' she added . Former top 10 player Petkovic proved a strong opponent for a season-opener and Williams dropped her service early in the match . But she quickly recovered and also made inroads on the Petkovic service , as well as sending down 11 aces of her own . `` It was an intense match , which was really good , '' Williams said . `` She 's a good player . She 's been in the top 10 before and she was on her way to being even better . So it was a really good match for me . '' Williams will next play ninth seed Dominika Cibulkova , who had to battle for two hours 14 minutes to beat 43-year-old Japanese veteran Kimiko Date-Krumm , 6-3 1-6 6-3 . Despite her desire for some shut eye , Williams will be hoping to have got back to more regular sleep patterns after only flying into Australia Saturday ahead of the tournament . She tweeted : `` I keep going to sleep around 8:30 or 9pm ... Ughhh I 'm so tired trying to stay awake ... # jetlagisreal . '' Third seed Maria Sharapova is on the comeback trail after an injury layoff so may have mixed feelings about the withdrawal of her schedule second round opponent , Australian teenager Ashleigh Barty , who has torn a left abductor muscle . The Russian superstar will now advance to the quarterfinals , where she will play 2012 champion Kaia Kanepi of Estonia . In other matches Tuesday , fourth seed Jelena Jankovic beat Elina Svitolina , 6-1 6-3 and Kanepi saw off eighth seed Carla Suarez Navarro 6-2 6-2 .
Serena Williams wins opener at Brisbane International . Beats Andrea Petkovic of Germany 6-4 6-4 . Admits to feeling jet lagged after flying into Australia Saturday . Will be skipping any New Year celebrations .