"I wish I could tell the future. But, I can't. So, I am going to try and keep it (number one rank) as long as possible and do whatever I can," she told reporters here late last night after the Indian team, led by her, defeated Philippines in the Fed Cup 2015, Group II, Asia/Oceania tournament and moved to Group I.
Sania played a doubles match in the event last night and helped her side beat Philippines 2-1.
She expressed happiness over her team winning the matches in the Fed Cup, her first assignment after reaching the top rank in women's doubles.
The tennis complex at the L B Stadium here was the venue where she had won her first major title in tennis about a decade ago.
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A defeat for Raina in a singles match yesterday against her Philippines rival Katharina Lehnert was the sole match India lost in the tournament.
"It's great to be with these younger girls. They are all playing very good tennis. The only way is forward and up. They are improving every year. In a couple of years, we hope to get through the world group (of Fed Cup)...," she said.
Noting that she has been playing with the Indian girls team comprising younger players like Thombare and Raina for about two years now, she said she would continue to work with them in whatever capacity she can.
Replying to a query on her expectations at the Stuttgart WTA event for which she would be leaving tonight, Sania said: "I am not really thinking about Stuttgart right now. I am thinking about Fed Cup. We are really happy."
Asked about her playing in the Group I event of Fed Cup to be played next year, she said: "If I don't retire by next year, I will play, there is no reason I won't.