Tony Romo OK after giving Dallas Cowboys scare

Cowboys quarterback Tony Romo left Dallas' preseason game against the Seattle Seahawks on Thursday due to back tightness, but the condition wasn't considered serious.

On Dallas' third offensive play, Romo scrambled from the pocket, then went into a slide near the line of scrimmage. He was crunched by Seahawks defensive end Cliff Avril from the blind side.

After staying on the turf initially, Romo walked off on his own. He threw some passes on the sideline but did not return to action.

At halftime, Cowboys coach Jason Garrett said, "His back was bothering him a little bit after that play. We don't think it's a serious thing, and we just felt better keeping him out. Dak (Prescott, the backup quarterback) came in and did a great job."

Cowboys owner Jerry Jones told Dallas TV station CBS 11, "After that little (Romo) scare... I guess I got my breath. He's not injured. He was OK on the sidelines."

Romo completed his lone pass of the game for 11 yards.

Romo underwent a pair of back surgeries in 2013, and he missed most of last season due to a broken left collarbone.