Undrafted Brady Cook knows exactly whats at stake in first NFL start

Aaron Glenn knows how this business works.He knows — from his 15 years as a player, from his decade-plus in coaching — how fleeting any window of opportunity in the NFL can be for someone who was a draft pick and especially for someone who wasn’t selected.

Text with Brian Costello all season as he brings Sports+ subscribers the latest Jets intel from on the field and off.So Glenn understands what Brady Cook is staring down Sunday, when the undrafted rookie from Missouri will quarterback the Jets in his first career start.Sometimes, there’s only one shot.

Sometimes, it’s the perfect storm of injuries creating an avenue to the field that wouldn’t otherwise exist, which happened for Cook when Tyrod Taylor (groin) and Justin Fields (knee) didn’t practice for a third consecutive day Friday and were ruled out for the Jaguars game.“When you have that one shot, man, you have to shine in that shot because you never know if you’re going to get it again,” Glenn said before practice Friday.And after Cook took first-team reps all week in a setting far more controlled than the chaos of entering mid-game like he did last weekend, Glenn believes the Jets’ 10th different starting quarterback since the beginning of the 2022 season is positioned to capitalize.Cook said that he and Glenn haven’t spoken about the notion of players sometimes only getting one chance.

Glenn, though, said the 24-year-old understands it.So in front of his fiancée, his parents and any other Jets fans scattered around EverBank Stadium, Cook will be officially tasked with orchestrating his first NFL chance — a 60-minute sample, against an AFC South-leading Jacksonville team — to provide enough tangible evidence to make his cameo as signal-caller last longer than one game.“I think that could be the case in a given situation,” Cook told The Post of getting one chance, “but it’s not really how I’m thinking about it.

Like I said, I’m really just focused on my preparat...