HOUSTON Seattle's Richard Sherman saw Houston quarterback Matt Schaub roll out and had a pretty good idea what he wanted to do next.
Sherman jumped the route, stepped in front of Owen Daniels and returned an interception 58 yards for a touchdown to force overtime Sunday.
Steven Hauschka kicked a 45-yard field goal in the extra period to give the Seahawks a 23-20 victory for the first 4-0 start in franchise history.
"It's a high-risk, high-reward play," Sherman said. "You have to jump in, and you might get beat over the top for a 20- or 30-yard gain if he gets the ball down there. But if you make the play, you might get a pick six and change the game."
The NFL's best defense held Houston (2-2) scoreless after halftime and erased a 20-3 deficit.
"It was important for our ball club to win on the road, to continue our win streak," Sherman said.
Schaub threw for 355 yards and two touchdowns but also had two interceptions and failed to move the offense in overtime. He lamented making the throw that Sherman intercepted.
"It hurts," he said. "It hurts bad."
Russell Wilson finished with 123 passing yards and a touchdown, and Marshawn Lynch had 98 rushing yards and a score.
"Russell's play was off the charts," Seahawks coach Pete Carroll said. "I don't even know what his numbers were; it didn't matter. You had to watch the game to see the things he did to give us a chance."