Ankita, India's number one singles player at 307, took the court after Prarthana Thombare had lost the opening singles.
Battling the odds, Ankita toppled the world number 56 with her 6-3 6-1 win over the Japanese number one.
Prarthana, ranked as low as 523, had lost tamely 2-6 1-6 to Eri Hozumi, placed 206, as India trailed 0-1.
Ankita though drew parity for Indian with her shock win. India, at that point, had a real chance to upset the fancied Japan with having world number one player in Sania in the team.
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With Sania in side - who has not lost a match since US Open in 2015 and has weaved an incredible 36-match winning streak, India had a great chance to beat Japan. India have already lost to hosts Thailand 0-3 on Wednesday and now they are out of the reckoning for the Play-offs for the World Group II.
India will take on Uzbekistan in their last Group engagement tomorrow.
Talking about her memorable win against Hibino, Ankita said she was confident of putting up a good fight today.
"I have last very close matches recently with top players. I had opprtunities but could not seize those. But Sania told me how to play against the girl before my match and I was able to do that. So it was very helpful," she said.