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.

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,

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.