Amari Cooper is, by all accounts, as mild-mannered and polite a young man as you'd ever want to meet.
For NFL defenses, he's been a rude slap in the face — the same kind of slap that Cooper felt a few years ago.
The Oakland Raiders receiver is the first rookie since Mike Ditka in 1961 with three 100-yard performances in his first six games. Cooper, the fourth pick in last spring's draft, and St. Louis Rams running back Todd Gurley are midseason favorites for offensive rookie-of-the-year honors.
The slap Cooper absorbed came on an unofficial recruiting trip to Florida State, after an assistant coach from his high school issued a challenge to Seminoles...