Minnesota Vikings QB JJ McCarthy reveals his intense “alter ego” named “Nine” that fuels his focus and game-day mindset.

J.J. McCarthy burst into Minnesota's locker room in Detroit last week in the afterglow of a critical victory for the Vikings, meeting his boisterously welcoming teammates with an enthusiasm and intensity that took the party for the visitors to an even higher level.

Minnesota boasts elite receivers, while Baltimore is built around its run game. Here's how the two teams stack up for Sunday.