The Red and Golds retained their perfect record against the newbies and ended their title hopes with a resounding victory.
Sporting's win in the first match of the day already confirmed that the defending champions were out of contention in this year's tournament while anything short of a win wouldn't have been enough for Bengaluru to seal a semi-final berth.
Armando Colaco made a couple of changes to the East Bengal side that lost to Sporting Clube de Goa in the last match as Robert Lalthlamuana and Shylo Tulunga were picked ahead of Saumik Dey and Harmanjyot Singh Khabra. Ashley Westwood however fielded an unchanged first eleven from their recent draw with Rangdajied United.
It was the Red and Golds who created the first real chance of the game when Shylo Tulunga sent in a precise cross from the right in the 7th minute for Ryuji Sueoka inside the box who only had the keeper to beat. However, the Japanese midfielder failed to make any contact and the chance went begging.
Tulunga was in the thick of the things once again in the 11th minute as he supplied a quality ball for Chidi Edeh after playing a neat one-two, but the Nigerian's shot went well over the bar.
The travelling Bengaluru fans were momentarily elated in the 15th minute when Sean Rooney buried his header into the back of the net, only to find the linesman raise his flag for offside.
Two minutes later, Sunil Chhetri got a hold of a weak goalkick by Gurpreet Singh Sandhu and ran down the left flank before sending in a cross for Rooney but the latter failed to direct it towards the target.
The best chance of the half came in the 45th minute when James Moga was handed a golden opportunity of scoring after the Bengaluru defense made a poor clearance. However, the powerful volley by the South Sudanese striker sailed well over the crossbar.
After the break, Bengaluru were the first to create a goal-scoring opportunity after Arnab Mondal failed to make a clearance inside the box and had to bring down Sunil Chhetri, as the latter got a hold of the ball.
However, the Indian skipper failed to convert the spot-kick with Gurpreet Singh making a vital stop for his team.
Just on the hour mark, James Moga unleashed a brilliant free-kick but his shot rattled the crossbar.
It was Chidi Edeh who broke the deadlock in the 63rd minute when Pawan Kumar produced a howler. The Bengaluru custodian dived to his left but failed to keep out a relatively tame shot from the striker.
Bengaluru also had their chances midway through the second half when Rooney tried to curl the ball in the top corner from just outside the box, but even a deflection from an East Bengal defender didn't help guide it towards the target.
It was Chidi Edeh once again who double his side's tally as a deflected effort from James Moga fell to his feet and he managed another long range effort from the same position, but this time Pawan was left helpless.
In some late drama, Ashley Westwood, the Bengaluru FC gaffer was sent off by the referee after getting involved in a spat with the linesman.
Bengaluru FC earned another penalty late into the game, after Sean Rooney was tripped inside the box, but the Australian striker also failed to reduce the deficit as his effort went over the bar.
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