Defense Can't Rest for Playoff-Minded Jets

New York Jets fans will be looking for different things during tonight's preseason opener against the Rams. Many fans will be eager to see how first-round pick Mark Sanchez looks at quarterback when he takes over for tonight's starter Kellen Clemens. Others will focus on the performance of the running backs, even though three-fifths of the starting offensive line will sit out the game because of injuries. But in defensive guru Rex Ryan's debut as head coach, there should be more anticipation on how the defense performs. After all, if the Jets are to become a legitimate playoff contender this season, the defense will have to lead the way.  It's usually true during training camp that the defense is far ahead of the offense in terms of execution and cohesiveness, and the Jets have been no exception since camp opened at SUNY-Cortland last Friday. The Jets on paper lack the offensive firepower to win high-scoring games. So their defense ...