White completed 14 of 26 passes for 132 yards in Thursday's preseason loss to the Buccaneers.
The second-year QB got the start in the final preseason game but had another ineffective showing. White played into the third quarter but only managed to lead the Cowboys' offense to a single field goal, and his fumble on a first-quarter sack led to Tampa Bay's first TD of the night. Despite being a fifth-round pick in 2018, his lack of development has not only cost him a shot at overtaking Cooper Rush for the job of Dak Prescott's backup, but possibly a spot on the roster altogether, even as a member of the practice squad.