Sardar Singh said he made the decision after a disappointing Asian Games where India failed to defend their title and returned with a bronze medal.
The Indians went into the Asiad looking to seal their Olympic berth well in advance but that didn't happen as they had to settle for bronze after defeating Pakistan.
India men's hockey team made a mockery of Sri Lankan challenge pumping in 20 goals to remain unbeaten in the pool stages.
The 23-year-old Toor sent the iron ball to a national record distance of 20.75m to win his maiden Asian Games medal on the opening day of the athletics competition.
This is India's biggest victory ever victory and the team has broken a 86-year-old record.
The coach said India will settle for nothing less than defending their title in the Games, but admitted it is easier said than done.
India beat New Zealand 3-1 to take an unassailable 2-0 lead in the three-match Test series at the Sports Authority of India's Bengaluru Campus.
Indian Hockey Team would be eager to book their direct ticket to Tokyo Olympics: PR Shreejesh
Indian Hockey Team would be eager to book their direct ticket to Tokyo Olympics: PR Shreejesh
The Indian team will be the highest ranked side in the tournament, and will be the favourites to retain their title.
Indian men's hockey team forced a 1-1 draw against hosts Netherlands in their last league match to set up the Champions Trophy summit clash with world number one Australia.
India will be led by Rani Rampal, who has returned to the team after having been rested for the recently concluded 5th Women's Asian Champions Trophy held in South Korea.
Under the guidance of Harendra, who led the Indian junior men's hockey team to the WC title in 2016, the women's team finished an impressive fourth at the 2018 CWG.
India's junior hockey team thrashed hosts Thailand 25-0 in the opening match of the men's event at the Asian Youth Olympic Games Qualifier 2018 in Bangkok on Wednesday
Pakistan, the country that launched the hockey Champions Trophy back in 1978, take on arch-rivals and Asian champions India.
India thus avenged the 2-3 loss to Ireland in their last league stage match on Friday which had eliminated their already slim chances of qualifying for the medal rounds.
The Indian team looked in good shape as they made forays into the opposition half regularly and also defended well as a unit.
By virtue of this draw, last year’s bronze medallist India are now placed fourth in the table in the six-team tournament.
In the previous edition, India had finished third after beating New Zealand 4-0 while Great Britain won the title after beating Australia 4-3 in the final.
Manpreet, 25, said the CWG hockey competition is of a high standard with several top teams and his side would have to play their best to win a medal.
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