Day four of Vikings camp saw the public be welcomed onto the facilities grounds where they got to see J.J. McCarthy shine.

Here are more takeaways from Day 4 of training camp: Fittingly, McCarthy flashed his ability with layered throws early in practice on Saturday afternoon at TCO Performance Center. There was a well-placed ball to Jalen Nailor on the sideline, for example, as well as a pinpoint pass to T.J. Hockenson over the middle.

There's plenty to watch for when the Vikings open training camp this week, beginning with quarterback J.J. McCarthy.