"We will clash with the big names but I am not afraid because I have world number 1 Sania Mirza next to me and I think I am really prepared for it," she told reporters after being felicitated by her company Indian Oil Corporation.
"When it comes to power, I have played big tournaments, that will help me to adapt and I have taken necessary efforts for it," she added.
She and Sania will represent in the women's doubles at the games which will start from August 5 in the Brazilian city.
Asked about her chemistry with Sania, Prarthana, who hails from Barshi, Western Maharashtram said, "I think that's the plus point we have, Sania's father is my coach, I train at her academy, she makes me so comfortable and relaxed on the court that pressure is not even close to me.
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"The practise (with Sania) has started. We are together till 30 (July) and will practise in Hyderabad. It is enough time and I think we are reaching Rio on 1 August and our first match is on 7, so we have one week to adapt to the conditions and practise there together," she added.
"It is the first time (in Rio) and an advantage for tennis players. We are going a week before so that we can adapt to the weather," adds Prarthana.
The 22-year-old player said there is always expectations to get a medal and they will fight for each point and hopefully clinch a medal.