The Rockies might have had the deepest farm system in baseball two years ago, and they've graduated much of that talent to Coors Field.
• Rockies Top 30 Prospects list
That group includes slugging shortstop Trevor Story and six of the seven regular starting pitchers on their surprise 2017 National League Wild Card team in Tyler Anderson, Kyle Freeland, Jon Gray, German Marquez, Jeff Hoffman and Antonio Senzatela. Colorado also has high hopes for David Dahl, who had a spectacular 2016 debut but didn't appear in the big leagues last year because of injury, and fellow outfielder Raimel Tapia, a reserve a year ago.
:: Team Top 30 Prospects lists ::
All of those promotions depleted the system but haven't drained it completely. Middle infielder Brendan Rodgers has a lofty offensive ceiling, as does Ryan McMahon, the favorite to claim the Rockies' first-base job in 2018. Right-hander Riley Pint has some of the best pure stuff anywhere in the Minors, though he's still learning how to harness it. Third baseman Colton Welker, right-hander Peter Lambert and shortstop Ryan Vilade have the tools and track record of performance to crack MLB Pipeline's Top 100 Prospects list this summer.
Twenty-three prospects on our Rockies Top 30 are products of the Draft, including the first nine. That latter group includes first-rounders Rodgers and Pint, supplemental first-rounder Tyler Nevin and second-rounders McMahon, Lambert, Vilade and Ryan Castellani.
Biggest jump/fall
Here are the players whose ranks changed the most from the 2017 preseason list to the 2018 preseason list.
Jump: Sam Hilliard, OF (2017: 30 | 2018: 12)
Breiling Eusebio, LHP (2017: NR | 2018: 13)
Fall: Ben Bowden, LHP (2017: 14 | 2018: 24)

Best tools
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. Players in parentheses also have the same grade.
Hit: 60 -- Brendan Rodgers
Power: 55 -- Rodgers (Ryan McMahon, Tom Murphy, Chad Spanberger, Ryan Vilade)
Run: 70 -- Wes Rogers
Arm: 70 -- Yonathan Daza
Defense: 60 -- Garrett Hampson (Yonathan Daza)
Fastball: 75 -- Riley Pint (Jairo Diaz)
Curveball: 55 -- Peter Lambert (Breiling Eusebio, Mike Nikorak, Pint, Jesus Tinoco)
Slider: 55 -- Pint (Yency Almonte, Ryan Castellani, Diaz, Tinoco)
Changeup: 60 -- Lambert
Control: 55 -- Lambert (Will Gaddis)
How they were built
Draft: 23
International: 4
Trade: 3
Breakdown by ETA
2018: 8
2019: 9
2020: 8
2021: 4
2022: 1
Breakdown by position
C: 2
1B: 4
2B: 2
3B: 1
SS: 2
OF: 8
RHP: 8
LHP: 3