Houston fell 32-0 in the 2014 preseason opener at Arizona on Saturday night. Despite not finding the red zone, the running backs combined for 90 rushing yards, averaging 5.3 yards per play.
Grimes led the backs with 10 carries for 39 yards and played for most of the first half.
"Grimes had a decent night,” O’Brien said. “Grimes is a smart guy. He’s a really good teammate and he’s doing a good job. He came back. He had a little hamstring [injury] when he first got back and since he’s been off the shelf, he’s had a good camp.”
“I felt pretty good running the ball, Blue said. "The o-line made a couple of good blocks up there I just felt good. They opened the hole for "me. They made my job easy so I just saw the whole and went and got it and what I do best and get some yards."