Per Cowboys reporter Michael Gehlken, Tony Pollard revealed that he tore his left plantar fascia on his long TD run in Week 13. He's expected to be a true game-time decision in Week 14. (Michael Gehlken on Twitter)
This sounds like a pain tolerance issue for Pollard as he battles through this foot injury. We'll have to continue to monitor the practice reports as we get closer to Sunday, but fantasy managers that have been relying on Pollard in their starting lineups might need to start getting a backup plan ready.