Speaking Wednesday at the NFL’s fall meeting in New York, Jones described the addition of longtime defensive assistant Mike Pettine earlier this month as a targeted move. Pettine had worked with the Cowboys’ coordinators and been with the team during the spring, Jones said.

Jones said Pettine wanted to help and had a background that made him a strong fit for the staff. The Cowboys hired Christian Parker as defensive coordinator, but their defense has struggled through the opening six games.

Dallas has lost two straight, scoring a combined 29 points in those games. Jones said the offensive problems reflect tactical issues rather than a lack of effort, and said he had discussed the team’s performance with second-year coach Brian Schottenheimer.

Jones said he believes the offense can improve in areas that have been frustrating, particularly after the most recent game. He also said he would pursue moves to strengthen the roster if an opportunity arose before the Nov. 10 trade deadline.

The owner called himself frustrated and disappointed with the record, but said the NFC East standings leave room for Dallas to contend. The New York Giants led the division at 3-2-1; Philadelphia was 2-4 and Washington 1-4-1.

Jones said he sees promise in the Cowboys’ talent and in adjustments the team has made in the past. He did not indicate that those possibilities would prompt another coaching change this season.