Rush has been in the NFL for 7 years now and has bounced around practice squads for a living.
SInce signed on as an UDFA following the 2017 NFL draft, Rush has been with Cowboys his SIX years in the league, except for a 6-month stretch from May through October 2020, when he was waived by Dallas, then signed on with the Giants (with their new OC Jason Garrett).
Rush became the Cowboys' backup QB before the sixth game in 2017 - his rookie season.
Since that point, Rush only appeared in 5 games total in the three seasons from 2017-2019....but he was the Cowboys QB2 during the entire time.
In October 2020, Rush rejoined the Cowboys on their practice squad after Prescott's season-ending injury and Andy Dalton was concussed during a game when he became the starter.
2021 - Rush beat out Garrett Gilbert and Ben DiNucci to become the Cowboys backup for that season.
2022- Rush began the season on the Cowboys' practice squad, but was activated to the roster and entered game 1 (vs. Tampa Bay) when Prescott was injured. When Prescott returned to action 5 games later, Rush went back to being QB2.
2023 - Rush signed a two-year deal in the offseason with Dallas.
Two weeks from today, he will begin his 7th season as the Cowboys backup QB2.