I'm admittedly not a football fan, and I only really pay attention to NFL during the playoffs and the Super Bowl, mostly for the social aspect or because it's "an American thing" to do. But I got this idea for a meta crossword while trying to think of something "seasonal"... It might be a bit more challenging than your typical "Smooth Sailing Sunday", but it's a playoff day and a football theme seems fitting. I can't say more, but I think you'll enjoy it.
Here are a few nudges to use as you need them:
Hint #1: What do the nine starred clues all have in common?
Hint #2: Does it help to know the meta answer is nine letters?
Hint #3: A certain clue (not starred) relates to the puzzle title and offers a big hint!...and yes, quick and painless Google searching is likely.