2017’s Best Pitchers Under 25

This is a list, in no particular order, of the best pitchers under 25 based solely on their 2017 performances. Players who turned 25 after June 30th and who started at least 15 games or relievers who appeared in at least 30 games are eligible.


  • Luis Severino, 23

  • Luis Severino
    ERA- WAR G GS W L ERA IP CG SHO SV R ER BB SO SO/9 WHIP
    67 5.3 31 31 14 6 2.98 193.1 0 0 0 73 64 51 230 10.7 1.040

  • Luis Castillo, 24

  • Luis Castillo
    ERA- WAR G GS W L ERA IP CG SHO SV R ER BB SO SO/9 WHIP
    71 2.5 15 15 3 7 3.12 89.1 0 0 0 32 31 32 98 9.9 1.075

  • Aaron Nola, 24

  • Aaron Nola
    ERA- WAR G GS W L ERA IP CG SHO SV R ER BB SO SO/9 WHIP
    82 4.5 27 27 12 11 3.54 168 0 0 0 67 66 49 184 9.9 1.208

  • Michael Fulmer, 24

  • Michael Fulmer
    ERA- WAR G GS W L ERA IP CG SHO SV R ER BB SO SO/9 WHIP
    86 3.6 25 25 10 12 3.83 164.2 1 0 0 80 70 40 114 6.2 1.154

  • Taijuan Walker, 24

  • Taijuan Walker
    ERA- WAR G GS W L ERA IP CG SHO SV R ER BB SO SO/9 WHIP
    76 2.7 28 28 9 9 3.49 157.1 0 0 0 76 61 61 146 8.4 1.328

  • Jordan Montgomery, 21

  • Jordan Montgomery
    ERA- WAR G GS W L ERA IP CG SHO SV R ER BB SO SO/9 WHIP
    88 2.9 29 29 9 7 3.88 155.1 0 0 0 72 67 51 144 8.3 1.230

  • Dylan Bundy, 24

  • Dylan Bundy
    ERA- WAR G GS W L ERA IP CG SHO SV R ER BB SO SO/9 WHIP
    96 2.7 28 28 13 9 4.24 169.2 1 1 0 82 80 51 152 8.1 1.196

  • Archie Bradley, 24

  • Archie Bradley
    ERA- WAR G GS W L ERA IP CG SHO SV R ER BB SO SO/9 WHIP
    38 3.7 63 0 3 3 1.73 73 0 0 1 14 14 21 79 9.7 1.041

  • Josh Hader, 23

  • Josh Hader
    ERA- WAR G GS W L ERA IP CG SHO SV R ER BB SO SO/9 WHIP
    47 1.8 35 0 2 3 2.08 47.2 0 0 0 11 11 22 68 12.8 0.986

  • Roberto Osuna, 22

  • Roberto Osuna
    ERA- WAR G GS W L ERA IP CG SHO SV R ER BB SO SO/9 WHIP
    76 1.5 66 0 3 4 3.38 64 0 0 0 26 24 9 83 11.7 0.859


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