On paper, ATK, placed second in the league table with 17 points from 11 games, are certainly favourites going into the match, but their performances in away games have left a lot to be desired as their last away win has come more than a month back.
For Dynamos, it has been a contrasts of sorts compared to ATK as they have got some fresh wind in their fledgling campaign with convincing wins over NorthEast United FC and Mumbai City FC.
In their first leg match in Kolkata, both teams had played out a 1-1 draw.
For Dynamos and their Dutch coach Harm van Veldhoven, they finally seemed to have got their bearings right having found a combination that can win matches for the 'Orange Brigade'.
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As harsh as it may sound but 40-year-old Italian legend Alessandro del Piero is finding it difficult to bring something special to the table for the Dynamos.
For Dynamos, their performance will depend a lot on the trio of Danish striker Mads Junker, Brazilian centre forward Gustavo dos Santos and playmaker and skipper Hans Mulder.
Indians like Steven Dias, Shylo Malsawntluanga will like to prove their worth in the crunch match.
If the trio fires in unison, they can prove to be handful for ATK's back four of Kingshuk Debnath, Arnab Mondal, Josemi and N Mohanraj.