Mohun Bagan were held to a 1-1 stalemate by Bengaluru FC at the Barabati Stadium in Cuttack in the last encounter of Group B in the Federation Cup.
Bengaluru surged into the lead in the 11th minute through Alwyn George but Mohun Bagan equalised through Sony Norde in the 50th minute.
Mohun Bagan made a clutch of changes as Sanjoy Sen went for a 4-3-3 formation with Jeje Lalpekhlua flanked by Sony Norde and Kean Lewis on either flanks.
Albert Roca meanwhile had Amrinder Singh in goal while the trident of Lenny Rodrigues, Harmanjot Singh Khabra and Cameron Watson started in midfield.
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The match got off to a cagey affair with both teams probing each other for weaknesses before Bengaluru had a surprise lead in the 11th minute. Alwyn George managed to go past Subhasish Bose and with Kinshuk Debnath in no man's land, the striker buried his shot into the net with Debjit Majumder's dive going in vain.
It was the Blues who were buoyed by the goal and continued to create chances. First it was Alwyn's shot that was deflected out for a corner before Sunil Chhetri managed to hit the post with a header in the ensuing flag-kick.
The Mariners slowly made their way into the game after a sluggish start and Katsumi Yusa had a chance with a header at the half hour mark but it was straight to Amrinder after Jeje had played him on.
Just after the break, Seminlen Doungel chose to go for goal instead of playing on his fellow team-mates in space and sent it straight to a grateful Debjit.
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Sony Norde, who was otherwise quiet in the match made most of the chance as he equalised for Bagan in the 50th minute. After beating Khabra with his trickery, he beat Amrinder with a low angled shot towards the far corner.
Both teams looked content to sit back after the goal and played out the remaining minutes with ease, with both having ensured qualifcation.
Bengaluru are all set to take on Aizawl in the first encounter on Sunday, while East Bengal and Mohun Bagan meet in a 'Kolkata Derby' in Cuttack in the final match of the night.