Managing prospects in dynasty can be a struggle, because a guy's value is only as much as someone is willing to pay for them. Until they make the majors they don't technically contribute anything to your team, and so many prospects end up having very little success in the majors. Essentially, prospects are lottery tickets. Some have better odds than others, some have better payouts, but in the end they're all lottery tickets. For this reason, I'm a big proponent of moving prospects for established big league pieces. You still have to be careful to make sure you don't trade away future stars for guys who aren't that much of an improvement from waiver wire options, but for the most part prospects are expendable and can be replaced. For example, if you trade any of the two guys in this article for major league pieces, you could likely replace them with any of the six guys I predicted to skyrocket this year and suffer very little to no loss in prospect value. If none of those guys are available, comment on this post and I'll happily give you more names to replace these guys with. That being said, these guys are ones who I personally would sell high on right now, not necessarily because they're bad, but because I think they're being overvalued and ranked too high.