"If you have teams like Argentina, Germany and Holland in your group, it becomes that difficult to end up being the top two teams in your group. It is not impossible to qualify, but now if you finish in top four, you have a chance to play in the quarterfinals," Oltmans told PTI at the Sai South Centre here.
"This format will give India and every other teams including, Canada a feel that they have a greater chance of making it to the quarterfinals," he said.
As per the new format 12 teams have been divided into two pools of six with each team initially playing round-robin games within their pool. Following the completion of the round-robin games, the top four teams from each pool will advance to the quarterfinals.
Previously, after completion of round robin games top two teams from each pool used to directly qualify for the semifinals.
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In a significant but surprise move, Hockey India has named senior goalkeeper PR Sreejesh as the captain of the national team for the Rio Olympics in place of long-standing skipper Sardar Singh.
"Sardar along with (vice-captain) SV Sunil, VR Rahunath
Manpreet Singh and Sreejesh forms a group of captain. I believe it is a positive endeavor," Oltmans added.
The 16-member Indian team has a mixture of youth and experience. It consists of seven players who played in the 2012 London Olympics while nine new faces were inducted.
Asked whether the players who were part of the London Olympics squad were sharing their experience with the new faces, the coach said: "They have experience but the problem is their experience is not positive. They had played 2012 Olympics and unfortunately that was not the best Olympics for India. So, they bring quite negative thoughts."
"I have a very good and positive experience of playing in the Olympics and therefore I share my experience, discuss about it and talk about it to prepare the youngsters as good as possible," he said.
India will miss the services of experienced defender Birendra Lakra in Rio after he failed to recover in time from a knee injury.
"I really wanted him (Lakra) to play, but if it is not possible, it is not possible. He is India's one of the best defenders," Oltmans said.
The men's hockey team will be departing for Rio de Janeiro via Spain tomorrow midnight.