IMHO no Aaron Donald, no chance. At a glance, I'd pick Tampa before I picked the Rams.Are the Rams the dark horse team in this year's playoffs?
But the NFL playoffs is a bit of a crapshoot; you just have to get hot for 4 games (see Eli Manning or Joe Flacco, or Nick Foles).
At 14-3, they probably shouldn't be called a "dark horse" but the Vikings are the lower seeded team with the strongest betting odds.