IRVING, Texas — Jon Kitna's main role on the Dallas Cowboys this season has been orchestrating card games, dominoes, electronic Scrabble and, as he puts it, "anything you can compete at."

Now he's in charge of their offense, too.

Kitna is the new starting quarterback, replacing Tony Romo for at least six weeks and perhaps the rest of the season.

Until taking over when Romo broke his collarbone Monday night, Kitna hadn't played in more than two years and never in his previous 21 games in Dallas. He doesn't quite have the same grasp on the playbook that Romo had and, at 38, he's less mobile.

Yet Kitna is plenty comfortable as a starter, having done so for seven years with the Seahawks, Bengals and Lions. This offense is similar to those, and his arm remains strong.

The biggest limitation could be the guys around him. The Cowboys are 1-5, their worst start since 1989.