2024 Preseason Left-Handed 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 | Kyle Harrison | SF | 60fb-60sl-40ch-50ct-60fv | MLB | 22 | now |
| 2 | Ricky Tiedemann | TOR | 65fb-60sl-60ch-60fv | AAA | 21 | early-2024 |
| 3 | Robby Snelling | SD | 55fb-60cv-55sl-50ch-60fv | High-A | 20 | 2025 |
| 4 | Shota Imanaga | CHC | 45fb-55sl-45cv-50ch-50fv | MLB | 30 | now |
| 5 | Noah Schultz | CHW | 60fb-60sl-55ch-55fv | Low-A | 20 | 2026 |
| 6 | Henry Lalane | NYY | 60fb-60ch-65sl-55fv | R (FCL) | 20 | 2026 |
| 7 | Carson Whisenhunt | SF | 60fb-40cv-70ch-50fv | AA | 23 | mid-2024 |
| 8 | Jackson Ferris | LAD | 60fb-40cv-70ch-50fv | Low-A | 20 | 2026 |
| 9 | Anthony Solometo | PIT | 60fb-60sl-55ch-55fv | AA | 21 | late-2024 |
| 10 | Robert Gasser | MIL | 50fb-55sl-50ct-45ch-50fv | AAA | 25 | early-2024 |
| 11 | Jordan Wicks | CHC | 50fb-40cv-50sl-60ch-45fv | MLB | 24 | now |
| 12 | Cade Povich | BAL | 55fb-55cv-55sl-50ct-50fv | AAA | 24 | early-2024 |
| 13 | Cooper Hjerpe | SL | 55fb-40cv-50sl-55ch-50fv | High-A | 23 | 2025 |
| 14 | Joey Cantillo | CLE | 55fb-40cv-45sl-60ch-50fv | AAA | 24 | early-2024 |
| 15 | Thomas White | MIA | 60fb-60cv-55ch-50fv | Low-A | 19 | 2026 |
| 16 | Justin Wrobleski | LAD | 55fb-55sl-50ct-40ch-45fv | High-A | 23 | 2025 |
| 17 | Brandon Barriera | TOR | 55fb-45cv-65sl-45ch-50fv | Low-A | 20 | 2026 |
| 18 | DJ Herz | WAS | 55fb-50cv-65ch-45fv | AA | 23 | mid-2024 |
| 19 | Reggie Crawford | SF | 70fb-60sl-50fv | High-A | 23 | 2025 |
| 20 | Hunter Barco | PIT | 50fb-55sl-50ch-50fv | Low-A | 23 | 2026 |
| 21 | Yu-Min Lin | ARI | 45fb-55cv-50sl-60ch-45fv | AA | 20 | mid-2024 |
| 22 | Joe Whitman | SF | 55fb-60sl-50ch-50fv | Low-A | 22 | 2026 |
| 23 | Mason Montgomery | TB | 55fb-50sl-55ch-50fv | AAA | 24 | early-2024 |
| 24 | Jake Eder | CHW | 50fb-60sl-50ch-50fv | AA | 25 | mid-2024 |
| 25 | Frank Mozzicato | KC | 50fb-60cv-45ch-50fv | High-A | 21 | 2025 |