Boston Red Sox in the Preseason Top 500
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. Ages are as of July 1.
| NO. | NAME | POS | B/T | FUTURE GRADES | LEVEL | AGE | ETA |
| 1 | Marcelo Mayer | SS | L/R | 60h-55p-40s-65fv | High-A | 20 | 2024 |
| 2 | Triston Casas | 1B | L/R | 55h-65p-30s-60fv | MLB | 23 | now |
| 3 | Ceddanne Rafaella | OF | R/R | 50h-50p-60s-55fv | AA | 22 | late-2023 |
| 4 | Miguel Bleis | OF | R/R | 50h-65p-60s-55fv | R (FCL) | 19 | 2025 |
| 5 | Nick Yorke | 2B | R/R | 60h-50p-50s-50fv | High-A | 21 | 2024 |
| 6 | Masataka Yoshida | OF | L/R | 60h-50p-40s-50fv | Japan | 29 | now |
| 7 | Blaze Jordan | OF | R/R | 45h-60p-40s-45fv | High-A | 20 | 2024 |
| 8 | Bryan Mata | SP | R/R | 65fb-45cv-60sl-55ch-45fv | AAA | 23 | early-2023 |
| 9 | Matthew Lugo | SS | R/R | 50h-45p-55s-45fv | AA | 22 | mid-2023 |
| 10 | Niko Kavadas | 1B | L/R | 40h-60p-30s-45fv | AA | 24 | late-2023 |
| 11 | Mikey Romero | SS | L/R | 55h-45h-50s-45fv | Low-A | 19 | 2026 |
| 12 | Eddinson Paulino | SS | L/R | 55h-45h-50s-45fv | Low-A | 20 | 2025 |
| 13 | Enmanuel Valdez | 2B | L/R | 50h-50p-45s-45fv | AAA | 24 | mid-2023 |
| 14 | Brandon Walter | SP | L/L | 55fb-60sl-50ch-45fv | AAA | 26 | mid-2023 |
| 15 | Roman Anthony | OF | L/R | 45h-55p-50s-45fv | Low-A | 18 | 2026 |
| 16 | Wilyer Abreu | OF | L/L | 45h-50p-50s-45fv | AA | 24 | mid-2023 |
| 17 | Wikelman Gonzalez | SP | R/R | 60fb-55cv-55ch-45fv | High-A | 20 | 2024 |
| 18 | Chris Murphy | SP | L/L | 55fb-50cv-50sl-55ch-45fv | AAA | 25 | mid-2023 |
| 19 | Nathan Hickey | C | L/R | 50h-55p-30s-45fv | High-A | 22 | 2024 |