With three wins and a draw from last four matches, the Antonio Habas-coached side has bounced back in the business end of the tournament and are fresh from a morale boosting 4-0 win over heavyweights FC Goa to climb to the top of the table.
ATK are in sublime form with back-to-back wins at home -- against Chennaiyin FC and FC Goa -- and are now one of the strong contenders to retain the title.
While Portuguese World Cupper Postiga is virtually ruled out of the tournament, ATK do not seem to be too concerned as they look to become the first team to enter the playoffs by making it 23 points from 13 matches.
Pune, on the other hand, are yet to win from five matches including two losses and the sixth-placed side must bounce back to keep their hopes alive.
More From This Section
"We definitely like to have better away games but it's the way it is and can't deal with it now. The immediate focus is to do well against Kolkata and we're prepared for that," said coach David Platt on the eve of the match.
Pune suffered a 1-3 loss in Delhi in a match their right back Moirangthem Govin Singh was red-carded after getting a second yellow card for a clumsy challenge in the box to bring Ralte Adinga down.