HOUSTON -- Many of Houston's defensive players left Sunday's loss to the Patriots talking about the adjustments New England made to the Texans' plan.

In defensive end Antonio Smith's estimation, the Patriots' offensive adjustments were too good at some points.

"Either teams are spying on us or scouting us," Smith told a group of reporters.

Smith said the Texans introduced wrinkles into their defense this week. He said that even though they'd never done those things in previous games, which would mean they weren't on film, the Patriots knew they were coming before they happened.

"I'm very suspicious," Smith said. "I just think it will be a big coincidence if that just happened by chance. I don't know for sure, but I just know it was something that we practiced this week."

Smith would not elaborate on exactly what adjustments New England made to Houston's defense. The Texans held a 10-point halftime lead but surrendered 27 second-half points in a 34-31 loss.

"I can't tell you an example because it's G15 classified," Smith said. "It's a defensive thing that we might continue to use. ...

"When you watch film of the team do something a certain way all the time no matter what team they play -- it's been 12 games played, and they always did it -- and then all of a sudden it's changed? It was pretty clever and pretty suspicious."

For the sake of clarity, Smith was asked whether he was saying the Patriots knew what the Texans were going to do defensively, even though those wrinkles had never appeared in games.

"I'm saying it seemed like it," Smith said. "You can't never be for sure on anything because I ain't over there in their huddle, in their locker room, but it just felt like it."

Patriots quarterback Tom Brady said in a radio interview Monday that he didn't think much of Smith's comments.

"We've kind of been through a lot of this before," Brady said on WEEI radio in Boston. "I don't really think much of it, truthfully. I just kind of have moved on."