Per Mike Fleming over at Deadline, Sienna Miller has inked to star opposite Ryan Reynolds and Ben Mendelsohn in the evocatively titled Mississippi Grind, the latest effort from Half Nelson filmmakers Anna Boden and Ryan Fleck. The story centers on a down-on-his-luck poker player who teams with a younger, charismatic card sharp on a road trip throughout the South. Shooting starts in January, on location in New Orleans. Depending on how things shake out, one could expect it on the festival circuit later in 2014, or at Sundance the following year.