Film will open on Dec. 25
The comedy also stars Kevin Hart, Kim Basinger and Alan Arkin and revolves around two retired boxers who head back to the ring to settle their final score.
The trailer has its moments of comedy but hints at some dramatic elements as well.
Though Stallone and De Niro are the headliners, Hart and Arkin may be the film’s secret weapons, with the two delivering plenty of laughs in the trailer.
The pic bows on Christmas Day.