Bubble Mower: Cowboys' preseason will trim fat from roster

The route runner who's catching everything, the down-line tackle willing to fight Travis Frederick, the free agent JAG fighting to stay relevant...

Who should fans be watching during the preseason? There are battles everywhere for playing time and in some cases there's a real fight for the final roster spots. The preseason will show which of these standouts is able to translate camp practice performance into the real thing at game time. 

If not... they better be prepared to Catch This Fade!