Through eight games, the Cowboys ranked 21st in the NFL in deep pass percentage (according to Pro Football Focus), attacking downfield (air yards of at least 20 yards) on just 11.2 percent of dropbacks. Now? That ranking is all the way up in the top five. Since the Week 9 matchup at Lincoln Financial Field, the Cowboys have thrown 41 passes that have traveled at least 20 yards in the air. That's eight more than the second-highest number during that time (the Tennessee Titans). That aggression is paying off, with Prescott throwing four touchdowns on those passes (second highest in the league).
While Dallas has generally been more aggressive downfield with its pass game, the biggest schematic changes on film are with the amount of pre-snap motion they use and the number of Empty sets they deploy.
Before the game in Week 9, the Cowboys were smack in the middle of the pack in the NFL with how much pre-snap motion they used (54.5 percent, ranked 15th in the league at that point). From Week 9 on? They've thrown more passes preceded by motion (125) than any team in football. They're third in the league in EPA per play when they use motion, so they're really good at it as well.