If there's one certainty about the Orioles' farm system, it's that it is fed largely through the First-Year Player Draft.
A total of 27 of the O's Top 30 prospects were initially drafted by the organization over the past several years. The list, once again, is topped by a former first-round pick. Dylan Bundy, Baltimore's top pick back in the 2011 Draft, comes in at No. 1 -- the third consecutive year the right-hander has topped the rankings to start the season. With Tommy John surgery now firmly in his rearview mirror, his days as a prospect should be numbered.
Bundy is joined by fellow right-hander and -- you guessed it -- former first-round Draft pick Hunter Harvey as the Orioles' representatives in the overall Top 100. Chance Sisco, Tim Berry and Mike Wright are the holdovers from last year's O's Top 10 to stay in the top third of the list. Christian Walker and Zach Davies made nice jumps from the teens, but Tyler Wilson beats them all, vaulting from the unranked into the Top 10.
Orioles' 2015 Top 30 Prospects list
Biggest jump: Wilson, RHP (2014: Unranked | 2015: No. 8)
Biggest fall: Josh Hart, OF (2014: No. 6 | 2015: 22)
Tools are graded on the 20-80 scouting scale, where 80 is the best possible grade and 50 represents Major League average.
Hit: Walker (55)
Power: Jomar Reyes (55)
Run: Hart (60)
Arm: Jonah Heim (60)
Defense: Hart (60)
Fastball: Tanner Scott (80)
Curveball: Bundy (60)
Slider: Harvey (55)
Changeup: Davies (65)
Control: Bundy (60)
How they were built
Rule 5: 2
Breakdown by ETAs
Breakdown by position
Jonathan Mayo is a reporter for MLBPipeline.com and writes a blog, B3. Follow @JonathanMayoB3 on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.