Rams vs. Cowboys: This Dallas episode comes with a plot twist

ARLINGTON, Texas — At first it was all Cowboys. Lately it’s all Rams. Whoever is on top in the half-century-old rivalry between two of pro football’s glamour teams, there’s almost always a lot on the line.
When the Rams and Cowboys collide at AT&T Stadium on the outskirts of Dallas late Sunday afternoon, it’s a big game again, but with a twist.
This time they’re fighting not for supremacy but for survival.
It’s a meeting of two teams trying to prove