Tennessee Titans running back Chris Johnson has had a rough start to 2012 -- through two games, the star has just 21 yards on 19 carries. In discussing the matter following Sunday's loss to San Diego, Johnson said the Titans' running game isn't working because they aren't executing. He also implored his teammates to step up and play better:

"People need to step up and do their job," Johnson said. "They don’t need to let people beat them. It don’t matter who the opposing defense is, you can’t let your guy beat you. You just can’t give up plays. You have to make plays like they make plays. I can’t speak for the defense. I can only speak for the offense."

Related: Tennessee Titans Lose 38-10; Continue to Disappoint and Embarrass

The Titans are dead last in the NFL in rushing yards per game and 31st in yards per carry. They've been outscored 72-23 this season.

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