Character mistake: At the scene at the dinner table where Pat and Tiffany meet, the prescription drug "Trazadone" is mispronounced with a long A as in "trayzadone." This a fairly common drug used for depression and as a sleep aid. Any nurse or pharmacist could tell you the correct pronunciation. Interestingly, the other lesser known drugs were pronounced correctly.
Character mistake: Robert DeNiro says that the Eagles beat the Seahawks 27-10. In a later scene, Jennifer Lawrence comments that the Eagles beat the Seahawks 14-7. Both scores were wrong, as the Eagles beat the Seahawks 26-7 that season.
Chosen answer: Their score was pretty bad, but just good enough to win the bet. Getting the money was the important part - they didn't really expect to win the competition.