Sox Prospects Baseball America Will Middlebrooks - 3B, Pawtucket 1 Will Middlebrooks - 3B, Pawtucket Ryan Kalish - OF, Boston 2 Xander Bogaerts - SS, Greenville Anthony Ranaudo - SP, Salem 3 Blake Swihart - C, GCL Red Sox Xander Bogaerts - SS, Greenville 4 Anthony Ranaudo - SP, Salem Jose Iglesias - SS, Boston 5 Bryce Brentz - OF, Salem Ryan Lavarnway - C/DH, Boston 6 Brandon Jacobs - OF, Greenville Matt Barnes - SP, Lowell 7 Garin Cecchini - 3B, Lowell Bryce Brentz - OF, Salem 8 Matt Barnes - SP, Lowell Brandon Jacobs - OF, Greenville 9 Ryan Lavarnway - C/DH, Boston Blake Swihart - C, GCL Red Sox 10 Jackie Bradley Jr., OF, Greenville[Also: Fangraphs Top 15 in comments.]
Sox Prospects rank Cecchini and Bradley #12 and #20, respectively.
Middlebrooks, Kalish, Iglesias, and Lavarnway are on the 40-man roster.
The Globe's Peter Abraham notes
Of these 10 players, only Middlebrooks and Lavarnway played at Double A or above last season. The Red Sox don't completely lack major league-ready prospects, but it's close. This is a function of a change in their draft strategy several years ago to focus on high school players. ... BA ranks on potential, not production.Which is how someone like Swihart, who has played two professional games and has a major league ETA of mid-2015 (according to SP) can be ranked so highly by BA.
For what it's worth, here is Fangraphs' February 2011 list of Sox prospects. The Top 5: Iglesias, Drake Britton (LHP), Ranaudo, Josh Reddick, and Stolmy Pimentel (RHP).