If there is anyone inside the Minnesota Vikings organization with a license to speak freely about J.J. McCarthy, it's Justin Jefferson. The team's star receiver spent the offseason working with his new quarterback,

This article was originally published on www.si.com/nfl/vikings as Vikings training camp recap, Day 9: J.J. McCarthy shines again, punch thrown.

Though he has spent countless hours watching film and studying the playbook so he can think the position at a high level, after missing all of last season while he recovered from a torn meniscus, McCarthy has also worked tirelessly on his mechanics so he can actually play the position at a high level.