Betts (fifth round) and Bradley (supplemental first) were part of a 2011 Draft crop that could stand up as the game's best of the decade. Blake Swihart (first) is the top catching prospect in the Minors, Henry Owens (supplemental first) is one of the top left-handers and Matt Barnes (first) is a power-armed right-hander who could be a mid-rotation starter or maybe a closer.
Boston's system got even stronger when it spent $63 million earlier this month to land Cuban second baseman Yoan Moncada, who has the upside of a Robinson Cano, with more speed. It was the latest big move for the Red Sox' international program, which has slugging third baseman Rafael Devers, speedy outfielder Manuel Margot and slick-fielding shortstop Javier Guerra advancing toward Fenway Park.
• Red Sox's 2015 Top 30 Prospects list
Biggest jump: Rafael Devers, 3B (2014: 13 | 2015: 5)
Biggest fall: Cody Kukuk, LHP (2014: 18 | 2015: Unranked)
Players are graded on a 20-80 scouting scale for future tools -- 20-30 is well below average, 40 is below average, 50 is average, 60 is above average and 70-80 is well above average.
Hit: Garin Cecchini (60)
Power: Rafael Devers (60)
Run: Manuel Margot (65)
Arm: Deven Marrero (60)
Defense: Blake Swihart (60)
Fastball: Michael Kopech (65)
Curveball: Brian Johnson (60)
Slider: Kopech (55)
Changeup: Henry Owens (65)
Control: Johnson (55)
How they were built
Breakdown by ETA
Breakdown by position
Jim Callis is a reporter for MLB.com and writes a blog, Callis' Corner. Follow @jimcallisMLB on Twitter. This story was not subject to the approval of Major League Baseball or its clubs. This story was not subject to the approval of Major League Baseball or its clubs.