Undrafted or not, Kyle Sloter is a rookie, yes.
Dak Prescott, selected by Dallas after Denver plucked Paxton Lynch in the first round, is doing just fine for the feckless Cowboys.
Mitchell Trubisky, who Chicago wanted so bad that it traded up for him, has shown some sparkle. He's a rookie.
Jameis Winston started as a rookie.
Deshaun Watson is groomed for a starting quarterback.
If there are other rookies nibbling on their reins, why not Sloter?
Are you mad because he was undrafted?
As for Trevor Siemian, who led a pathetic Denver offense that scored 3 points against Chicago, he spent an entire season showing us that he was capable of a big collapse. Denver went 5-7 in its last 12 games. No matter what anyone says, that is the definition of mediocrity. If not for its fearsome defense, Denver could easily have finished far below 9-7.
You do the math.
Scoring three points against New England in The House of the Horse is a beat down that Denver proudly owns and blame it on the offense.