Story byTom HanslinSun, December 7, 2025 at 11:41 PM UTC·3 min readBrady Cook couldn't have received any meaningful first-team reps during practices this week, but the opportunity to work closely with starters arrived when the Jets needed him the most. The undrafted rookie quarterback made his NFL debut in the Jets' blowout loss to the Dolphins on Sunday at MetLife Stadium, taking over midway through the first quarter when veteran Tyrod Taylor exited with a groin injury. AdvertisementAdvertisementAdvertisement"Definitely a challenge, but a great challenge -- one that comes with the job of being the backup quarterback," Cook said of his debut. "I felt ready to play today, but obviously didn't do enough to get a win... Coming in at half, talking it over, just taking a deep breath and coming back out there, definitely did [feel more comfortable]."Cook was unexpectedly thrown into the fire.