The Cowboys are gearing up for another week of preseason football. Dallas will visit the Las Vegas Raiders tomorrow night at Allegiant Stadium. The Cowboys are coming off a 13-12 loss to the Los Angeles Rams in their preseason opener on Sunday. Defensive end Shaka Toney reverted to the team's injured reserve after going unclaimed on waivers. On the injury front, wide receiver Brandin Cooks departed yesterday's practice early due to knee soreness.