I do not get the Hjerstad love. His swing looks stiff and I can see a lot of swing and miss in his game at the next level. Does not project well as a CF either with average arm strength and not great speed. I see him as a LF and I'll take the Sox OF prospects in the system over him.
If he was a HSer, maybe, but major pass as a 21 year old turning 22 in February with one loud tool (power).