New Delhi:Almost a year after breaking into the top 50, Sania Mirza has dropped ten places to 54 in the world rankings. It's certainly bad timing since the Indian teenager starts her US Open campaign on Monday against a player who till the weekend was ranked just below her. After a breakthrough season on the senior tour last year, this season has been a rather harsh reality check for Sania. She had ended 2005 full of promise and potential. As she goes into the final grand slam of this year, the potential is still there, but the promise remains unfulfilled. In the 19 tournaments she has played this year, the 19-year-old has crashed out in the first round of practically half of them. That includes Wimbledon and Roland Garros. Her four second round exits include one at the Australian Open where she was seeded for the first time. No huge upsets as she did last year, but she did have one top twenty scalp to her name - 16th seed Flavia Pennetta at the Paris Indoors. Sania's doubles career though has blossomed in 2006. It accounted for her only title this year, the Bangalore Open with Lisel Huber, three finals appearances and one semi final appearance. At least in the doubles, Sania has broken into the top 30 and is currently at a career high 28. Vijay Amritraj recently said that Sania needs to iron out some major flaws in her game. Certainly the big forehand is not one of them but perhaps the serve and volley is still an issue.