It was a hard-earned victory for India as twice the hosts had to come from a goal down to salvage three points from the encounter.
Drag-flicker Gurjinder Singh scored the winner for India in the penultimate minute of the match after Mandeep Singh (30th) and Akashdeep Singh (5-th) sounded the nets to level the scores.
By virtue of this win, India has kept alive their hopes in the tournament but they need to beat Korea in their final pool match to secure their quarterfinal berth.
"We got the victory right at the end but we fully dominated the match. If we would have taken the chances it would have been a comfortable victory," he said.
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Just after the match, Guest said that India should consider themselves lucky to pocket full three points from the match.
Clark, however, sounded cautious and said the Indians had to work on their accuracy if they wish to prolong their journey in the mega-event.
"We created plenty of chances. It was just about being accurate once you are inside the opposition circle."
Both India and Korea are on three points each from two outings but Korea have better goal difference than the Indians and only a draw in their last match would be enough for the Koreans to pip the home team and go forward.
India, on the other hand, face a must-win situation as Netherlands have already qualified for the quarterfinals with two wins from as many matches.