For the second straight season, Joe Flacco has burst onto the scene like he’s offering bored children Kool-Aid. This time, instead of replacing a once-great quarterback who’s now irreparably washed, he’s taken over for a young, toolsy prospect who may not get there.

Passer rating is an imperfect measurement of a quarterback, but to the extent that it shows how well a passer is playing, it points to something puzzling with the Colts this season.