The quarterback told the team's official website: "It was good. We did what we've been doing in training camp and moved the ball real well. We were holding back on a lot of our stuff, red zone stuff and some other things.
"We would have liked to have scored a touchdown [during Romo's drives], but we got hurt by penalties more than anything, and that aspect of it is just going to hurt you no matter what.
"So we have to avoid that [and] stress that this week, and we're going to make sure that stops."
The Cowboys play the Arizona Cardinals in their next pre-season game.