The list of broken quarterbacks grows ever longer after a clean sweep of Texas' NFL signal-callers.

The Dallas Cowboys and Houston Oilers, both needing a victory to reach the playoffs, lost starting quarterbacks Troy Aikman and Warren Moon on Sunday to injuries that could sideline them for the rest of the year.They joined a list of injured QBs that also includes, but is not limited to, division winners Joe Montana of San Francisco, Phil Simms of the New York Giants, Jim Kelly of Buffalo and Jim Harbaugh of Chicago.

Aikman suffered a separated right shoulder in the first period of the Cowboys' 17-3 defeat at Philadelphia, their fourth consecutive loss to the Eagles. Team physician Dr. Robert Vandermeer is expected to examine Aikman again Monday, though the initial diagnosis indicated he won't play again this season.

Moon caught the thumb of his passing hand on a helmet, dislocating it near the end of Sunday's 40-20 loss at Cincinnati. He is expected be out for at least three weeks.

Team trainer Brad Brown said Moon would have surgery to clean out the dislocated joint after the team returned to Houston.The Oilers are now tied for second with the Bengals and need a victory next week against Pittsburgh and a loss by either Cincinnati or Seattle to make the playoffs.

"It's devastating," Moon said. "You work so hard to get to this point. We've been close so many times. ... It's frustrating.

Asked if Aikman could heal in two weeks in time for a potential playoff game, Vandermeer said, "Anything's possible. He's a pretty tough guy. But I don't think that's going to work."

Moon and Aikman's injuries bring to 10 the number of quarterbacks sidelined in the last three weeks. The others are Montana, Simms, Cleveland's Bernie Kosar, Kelly, Kansas City's Steve DeBerg, Minnesota's Wade Wilson, Green Bay's Anthony Dilweg and Harbaugh.

Last week's games delivered a blow to New York-area teams as Simms and Kelly went down in the same game.

Cody Carlson, who relieved Moon on Sunday and started five games in 1988, will take over next week. Carlson has completed 15 of 26 passes with one touchdown and one interception this season.

Aikman was the sixth quarterback the Eagles have knocked out of a game this season.

Aikman was replaced by Babe Laufenberg, who had one completion all year. Laufenberg was 13 of 36 for 140 yards, but had four passes intercepted.