IRVING, Texas -- In order to break out of their 8-8 doldrums, the Dallas Cowboys will need a lot to go right in 2014. This week we take a best-case, worst-case look at five offensive and defensive players who will go a long way in shaping the Cowboys’ season. DeMarco Murray Best-case: He's a closer Murray ran for 1,121 yards last season and scored nine touchdowns on the ground. He was added to the Pro Bowl. When he plays well, the Cowboys play well.