Dallas, Texas (PSF) - The Dallas Cowboys have had one of their biggest fears come true for one of their rookies. It has been confirmed that rookie DeMarvion Overshown will miss the rest of the season with a torn ACL. The third round pick out of Texas had potential to start for the Cowboys to help a needed position on defense for Dallas. It is never good to see a knee injury especially during your rookie season but now it seems like Overshown will have to wait until next year to make his regular season debut.