Week 13 fantasy help defense??

should i play the saints defense at the redskins or the broncos defense at the chiefs I MUST WIN THIS GAME so plz if you have a team thats around 2 and 10 or 1 and 11 plz dnt tell me im 8-4 and my team is stacked so i just need this because if i win this and another person loses i get 1st place