The problem with a list that covers "only" the top 101 prospects in the game is that, after a certain point, prospect values become somewhat indistinguishable. That's not to say there is no point to the order at the back-end of the list, because there is, but players in the 102-110 range or so are probably a lot closer to those at the back of the pack than those in the 10-20 range are to the very top of the list.
Generally this means we end up with some "just missed" types for these prospect lists. Jason Parks of Baseball Prospectus released BP's just missed list on Friday, and it features a pair of Red Sox: Mookie Betts and Allen Webster. If you were wondering what Parks and Co. thought about the Sox farm, since they had just six Sox prospects in their top 101, this helps answer that to a degree.
Parks designates 10 prospects as "just missed", so the Red Sox have eight prospects in the top 111. Not bad at all. Here's Parks' thoughts on the latter pair.
Mookie Betts, 2B
It's a very promising profile, albeit one on the right side of the infield, which does limit his sex appeal when it comes to prospect rankings. He's a flashy defender, with range for days and a penchant for highlight plays, and at the plate he brings a very advanced approach that allows him to take advantage of fastball counts and drive the baseball. He's a likely major leaguer with a utility floor and a first-division ceiling if everything really comes together at the plate.
Allen Webster, RHP
If you believe Webster is a starter, a legitimate mid-rotation arm who can bring two plus pitches to the table and back them up with multiple breaking ball looks that can play above-average, he belongs not only in the top 101, but perhaps in the top 50. Personally, I think Webster ends up pitching near the back of a major-league bullpen, a frontline setup type who can push his already above-average arsenal higher in bursts while minimizing some of his shortcomings in command. That profile still puts him on the bubble for the 101, but he tasted the axe because of the internal projections about his likely role.
As I've said before, if Betts beats up Double-A pitching with anything resembling his 2013 work, he'll shoot up everyone's prospects lists -- this is understandable caution by BP, especially given the questions about his ultimate role. The same goes for Webster, who undeniably has the stuff to be a number two starter, even, but whether or not he can command it, or use it consistently, is unknown, leaving him with a variety of future roles and a "just missed" designation rather than a can't miss one.