The Red and Golds showed a lot of promise on the field but couldn't beat the Bagan defence which stood strong till the end. At the other end, Krishna's quality came to the fore and proved to be a big difference between the two teams.
Antonio Lopez Habas made three changes in the ATK Mohun Bagan lineup that beat Kerala Blasters 1-0 in the season opener. Jayesh Rane and David Williams came in place of Pronay Halder and Edu Garcia and Subhasish Bose replaced the injured Michael Soosairaj.
Robbie Fowler's side commanded the game for most of the first half and attempted to be fluid in their forays forward. Anthony Pilkington came close to scoring the opening goal in the seventh minute when he received a through ball from Matti Steinmann inside the box. The former Norwich City winger did well to go past Pritam Kotal but delayed his final effort and allowed Tiri to intercept and clear.
The only proper chance ATK Mohun Bagan had was in the 36th minute when Javier Hernandez received the ball inside the box from a corner. He kept his shot on target but Debjit Majumder did well to parry the ball out for a corner.
Roy Krishna finally broke the deadlock in the 49th minute with a clinical finish. Jayesh Rane initiated the move with a pass to Javier Hernandez at the edge of the box. The Spaniard took a touch and squared the ball for Krishna who found the back of the net with a quality strike.
Fowler tweaked his tactics after conceding the goal as he East Bengal shifted to a four-man defence and introduced Abhishek Ambekar on the left flank.
Balwant Singh should have restored parity in the 59th minute when he received a pass and entered the box through the left side but he failed to keep his shot on target.
In the 83rd minute, Pilkington unleashed a cracking shot on target from the edge of the box but Arindam Bhattacharya pulled off a brilliant save to deny the winger from scoring on his debut.
Two minutes later, Manvir Singh sealed the fate of the game with a quality goal from a solo effort. The forward went past Narayan Das on the right flank before cutting into the box and finding the back of the net with a swerving shot.
ATK Mohun Bagan bagged the bragging rights and also climbed to the top of the league table after today's match with six points from their first two outings.