However she expressed that she was just happy to be back after recovering from a serious wrist injury.
The 22-year-old vowed to bounce back as she works to once again to match her career-high of 27.
"I'm just happy to be back and doing what I love doing, playing tennis and competing," Sania said.On her game against Petrova, she conceded she was simply outclassed by a better player.
"There was a big crowd out there and I haven't played like that for six months.
"Of course I'm disappointed at losing but I will try and take positives from this.
"I will try and get into the top 30, of course, but the last five or six months have taught me to live for the moment so I don't want to get ahead of myself."
"When you're playing the world number 10 you expect her to raise her game under pressure and that is exactly what she did," she said of her opponent.Japanese 26th seed Ai Sugiyama secured a tough match-up in the third round against world no. 1 Jelena Jankovic after defeated Nathalie Dechy 1-6, 6-1, 6-3.
"I was a break up and I played a decent match but I still have a lot to work on.
"There are no excuses. I could blame it on a lack of match practice time, or on playing the world number 10. I had a sore stomach as well," she added.
"But at the end of the day I have to give her credit."
(Via AFP; Images via Yahoo! Sports)