The visiting Kolkata heavyweights scored through Syrian Mahmoud Al Amna (13th minute) and Japanese midfield general Katsumi Yusa (16th) to walk away with three points at the Ambedkar Stadium here.
With today's win, their fifth in eight matches, East Bengal maintained their top spot with 17 points. The Indian Arrows, on the other hand, dropped down to seventh in the 10- team league table with seven points from seven matches.
The AIFF's developmental side coached by Luis Norton de Matos and made up mostly of India's U-17 World Cup players were outplayed by their more experienced opponents in the first half.
They came back strongly in an evenly-contested second half but a goal eluded them as they failed to give finishing touches in crucial moments.
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East Bengal players gave the youngsters very little space and whenever the Arrows players held the ball, they were chased around. That tactic gave dividends for the Khalid Jamil coached East Bengal as the Arrows players appeared to be unsettled and were unable to keep the ball for long.
Arrows captain Amarjit Singh received a red card after his second bookable offence in their previous match against Mohun Bagan while Jeakson was injured in the same match on December 29.
The first half saw East Bengal do all the attacking with the Arrows citadel being threatened on many occasions.
Three minutes later, Katsumi curled in a beauty into the top right corner of the net, beating an out of position Arrows goalie in the air after a cross from the right beat all the home side defenders.
De Matos brought in Suresh Singh Wangjam in place of Abhishek Halder at the halftime and the Arrows played better in the second half, appearing a much more compact side.
In the 57th minute, Sanjeev Stalin's corner kick was headed in towards goal by Anwar Ali but Abhijit Sarkar's back-heel effort was saved by a diving East Bengal custodian Luis Barreto.
However, the attacking danger of the visiting team was still looming. In the 62nd minute, Laldanmawia Ralte's header off a Katsumi cross earned a top class save from goalie Gill.
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