Gurley has been hurt for months, his knee.
Visibly hobbled games 13-14, sat out entire games 15-16, bye week, went out there vs Dallas and got good stats but was not really even close to100%. Vs Saints he was still dinged (I assume sore) and just could not "go". Same toda, he tried vs Pats, but no way he was himself.
Sure, Rams management is going to say all week that he is fine.