2024 Preseason Relief Pitcher Prospect Rankings
Glossary for future grades: h-hit tool, p-power tool, s-speed tool, fb-fastball, sl-slider, cv-curveball, ch-change-up, ct-cutter, fv-future value overall. All ages as of July 1.
| NO. | NAME | TEAM | FUTURE GRADES | LEVEL | AGE | ETA |
| 1 | Mason Miller | OAK | 70fb-60sl-50ch-60ct-55fv | MLB | 25 | now |
| 2 | Yuki Matsui | SD | 55fb-50sl-60sp-40fv | MLB | 28 | now |
| 3 | Orion Kerkering | PHI | 60fb-70sl-45v | MLB | 23 | now |
| 4 | Prelander Berroa | CHW | 70fb-70sl-45fv | AA | 24 | early-2024 |
| 5 | Emiliano Teodo | TEX | 70fb-60cv-50fv | High-A | 23 | late-2024 |
| 6 | Ben Joyce | LAA | 80fb-55sl-30ch-45fv | MLB | 23 | now |
| 7 | Royber Salinas | OAK | 55fb-55cv-65sl-45fv | AA | 23 | late-2024 |
| 8 | Yariel Rodriguez | TOR | 55fb-50sl-50cv-45sp-45fv | MLB | 27 | now |
| 9 | Matt Canterino | MIN | 60fb-60sl-70ch-50fv | AA | 26 | late-2024 |
| 10 | Griff McGarry | PHI | 60fb-40cv-60sl-45ch-45fv | AAA | 24 | mid-2024 |
| 11 | Yoendrys Gomez | NYY | 60fb-40cv-60sl-45ch-45fv | MLB | 24 | early-2024 |
| 12 | Luis Gil | NYY | 60fb-60sl-45ch-45fv | MLB | 25 | early-2024 |
| 13 | Seth Johnson | BAL | 60fb-45cv-60sl-45ch-45fv | AA | 25 | mid-2024 |
| 14 | Lyon Richardson | CIN | 60fb-40sl-40cv-60ch-45fv | AAA | 23 | early-2024 |
| 15 | John McMillon | KC | 75fb-60sl-45fv | MLB | 26 | now |
| 16 | Sam Bachman | LAA | 60fb-60sl-40ch-45fv | MLB | 24 | now |
| 17 | Andrew Walters | CLE | 70fb-50sl-45fv | R (FCL) | 23 | 2025 |
| 18 | Connor Cooke | TOR | 60fb-55sl-45ch-45fv | AAA | 24 | mid-2024 |
| 19 | Zach Maxwell | CIN | 70fb-70sl-45fv | High-A | 23 | 2025 |
| 20 | Luke Little | CHC | 65fb-60sl-40ch-40fv | MLB | 22 | now |
| 21 | James McArthur | KC | 50fb-55cv-50ct-45fv | MLB | 26 | now |
| 22 | Sandy Mejia | HOU | 50fb-50sl-45ch-45fv | R (FCL) | 19 | 2026 |
| 23 | Woo Suk Go | SD | 55fb-45cv-55ct-45fv | MLB | 25 | now |
| 24 | Anthony Maldonado | MIA | 45fb-60ct-60sl-45fv | AAA | 26 | early-2024 |
| 25 | Jordan Leasure | CHW | 70fb-55cv-55sl-45fv | AAA | 25 | 2024 |
| 26 | Yosver Zulueta | TOR | 55fb-50cv-65sl-40ch-50fv | AAA | 25 | early-2024 |