[9] On December 25, he was promoted to the active roster along with defensive tackle Casey Walker, after the Cowboys placed tight end Gavin Escobar and quarterback Tony Romo on the injured reserve list.
Several reports from August, indicated that Showers outperformed Prescott, showing greater accuracy and a quicker release in training camp.
[12] However, the Cowboys coaching staff made the decision to start Prescott in the team's preseason opener at the Los Angeles Rams.
[15] For the backup quarterback position, the Cowboys wanted to pair Prescott with a veteran, so they released Showers on September 4 to make room for Mark Sanchez, signing him to the practice squad the next day.
[16][17] On October 7, it was reported that Showers would be switching positions from quarterback to strong safety, in order to give him a better chance to make the team.
[23] He suffered a torn left ACL in the second preseason game against the Cincinnati Bengals and was placed on the injured reserve list on August 20.
He was waived/injured with a hamstring injury during final roster cuts on August 31, 2019,[25] and reverted to the team's injured reserve list the next day.