The Dallas Cowboys completed their final road game of the preseason on Saturday night in Las Vegas, beating the Raiders 27-12 behind a Trey Lance touchdown pass to rookie Ryan Flournoy, a Kemon Hall interception return for a touchdown to start the fourth quarter, and a late rushing score by Lance to put the game away. All that stands between the Cowboys and the regular season now is a return to Texas and the conclusion of training camp and the preseason, which will culminate with a home game from AT&T Stadium against the Los Angeles Chargers next Saturday.