MLB.com Columnist

Jim Callis

Breaking down the Padres' 2015 Top 30 Prospects

Makeover thins out farm system, but San Diego still shows promise

Breaking down the Padres' 2015 Top 30 Prospects

Hired as the Padres' general manager in August, A.J. Preller hasn't wasted any time giving the franchise a makeover. He has bolstered the big league club via a series of trades that have put San Diego in a better position to contend, but which have also left the club without 10 of the 20 players on MLBPipeline.com's Top 20 Prospects list from a year ago at this time. Add in Keyvius Sampson, lost to the Reds on waivers after getting designated for assignment, and more than half the players on that list have departed.

Preller gave up quantity to acquire Matt Kemp, Wil Myers, Derek Norris and Justin Upton, but he held on to most of his quality. The Padres haven't officially surrendered a single player who made MLBPipeline.com's Top 100 Prospects list, though shortstop Trea Turner (No. 63) is expected to head to the Nationals as a player to be named in the Myers trade once that becomes permissible in June. San Diego still plans on building around right fielder Hunter Renfroe (No. 49), catcher Austin Hedges (No. 52) and right-hander Matt Wisler (No. 70), all of whom could be ready by mid-2016.

While the Padres' farm system depth has been thinned, they have a number of international prospects who could go a long way to replenishing it if they can refine their considerable tools. Right-hander Tyron Guerrero can hit 100 mph with his fastball, and he pitched in the SiriusXM All-Star Futures Game last summer. Infielders Franchy Cordero, Gabriel Quintana and Carlos Belen and outfielder Franmil Reyes also have high ceilings.

Padres' 2015 Top 30 Prospects list

Biggest jump: Franchy Cordero, SS (2014: Unranked | 2015: 9)
Biggest fall: Walker Weickel, RHP (2014: 13 | 2015: Unranked)

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.

Hit: Jose Rondon (55)
Power: Hunter Renfroe (65)
Run: Trea Turner (75)
Arm: Michael Gettys (70)
Defense: Austin Hedges (70)
Fastball: Tyron Guerrero (70)
Curveball: Zach Lemond (55)
Slider: Matt Wisler (55)
Changeup: Wisler (60)
Control: Wisler (55)

How they were built
Draft: 13
International: 9
Trade: 8

Breakdown by ETA
2015: 6
2016: 8
2017: 10
2018: 6

Breakdown by position
C: 1
1B: 0
2B: 4
3B: 2
SS: 3
OF: 8
RHP: 11
LHP: 1