Jack Martinez
St. Louis Cardinals (A+)P
Age: 23
Bats/Throws: R/R
6'4" / 215
DOB: 3/12/2003
(23 years, 7 months, 25 days)
P
Player Dashboard:
Report: 2026 Updated
Org Rk
Ovr Rk
ETA
FV
46
N/A
2028
35+
Fastball
45 / 45
Slider
40 / 45
Changeup
55 / 60
Command
30 / 45
RosterResource
| How Acquired: | Trade (ARI) Jan'26 |
| Draft: | 2025, Rd: 8, Pick: 18, Ovr: 243 |
| Draft Team: | Arizona Diamondbacks |
| Signing Bonus: | $167,326 |
| College: | Arizona State (Phoenix, USA) |
Rule 5 Eligible
Dec'28
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RG
Show
Report: 2026 Updated
Org Rk
Ovr Rk
ETA
FV
46
N/A
2028
35+
Fastball
45 / 45
Slider
40 / 45
Changeup
55 / 60
Command
30 / 45
RosterResource
| How Acquired: | Trade (ARI) Jan'26 |
| Draft: | 2025, Rd: 8, Pick: 18, Ovr: 243 |
| Draft Team: | Arizona Diamondbacks |
| Signing Bonus: | $167,326 |
| College: | Arizona State (Phoenix, USA) |
Rule 5 Eligible
Dec'28
News Settings
Article Source
All
FG
RG
Show
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Preseason ProjectionsMinor LeaguesCollege
| Season | Team | Level | Age | W | L | SV | G | GS | IP | divider | K/9 | BB/9 | HR/9 | BABIP | LOB% | GB% | HR/FB | divider | vFA | divider | ERA | xERA | FIP | xFIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | UL | NCAA | 21 | 4 | 3 | 2 | 22 | 4 | 45.0 | 10.00 | 5.80 | 0.80 | .252 | 72.1% | 4.40 | 5.27 | |||||||||
| 2025 | ASU | NCAA | 22 | 6 | 4 | 0 | 15 | 15 | 77.1 | 12.80 | 3.84 | 1.16 | .315 | 61.1% | 5.47 | 4.44 | |||||||||
| 2026 | STL | A | 23 | 1 | 7 | 0 | 16 | 16 | 60.2 | 12.76 | 5.04 | 0.74 | .280 | 65.8% | 30.8% | 7.7% | 4.30 | 3.06 | 4.03 | 4.76 | |||||
| 2026 | STL | A+ | 23 | 2 | 3 | 0 | 8 | 7 | 33.0 | 9.55 | 4.64 | 1.64 | .273 | 61.9% | 34.1% | 14.6% | 5.18 | 6.07 | 5.88 | ||||||
| 2026 | STL | MiLB | 23 | 3 | 10 | 0 | 24 | 23 | 93.2 | 11.63 | 4.90 | 1.06 | .277 | 64.4% | 32.1% | 10.4% | 4.61 | 3.06 | 4.75 | 5.15 | |||||
| 2027 | Steamer | PROJ | 24 | 0 | 0 | 0 | 0 | 0 | 1.0 | 6.12 | 4.78 | 1.50 | .284 | 69.7% | 36.5% | 5.44 | 5.67 | 5.62 | 0.0 |
| Season | Team | Level | Age | W | L | SV | G | GS | IP | divider | K/9 | BB/9 | HR/9 | BABIP | LOB% | GB% | HR/FB | divider | vFA | divider | ERA | xERA | FIP | xFIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | UL | NCAA | 21 | 4 | 3 | 2 | 22 | 4 | 45.0 | 10.00 | 5.80 | 0.80 | .252 | 72.1% | 4.40 | 5.27 | |||||||||
| 2025 | ASU | NCAA | 22 | 6 | 4 | 0 | 15 | 15 | 77.1 | 12.80 | 3.84 | 1.16 | .315 | 61.1% | 5.47 | 4.44 | |||||||||
| 2026 | STL | A | 23 | 1 | 7 | 0 | 16 | 16 | 60.2 | 12.76 | 5.04 | 0.74 | .280 | 65.8% | 30.8% | 7.7% | 4.30 | 3.06 | 4.03 | 4.76 | |||||
| 2026 | STL | A+ | 23 | 2 | 3 | 0 | 8 | 7 | 33.0 | 9.55 | 4.64 | 1.64 | .273 | 61.9% | 34.1% | 14.6% | 5.18 | 6.07 | 5.88 | ||||||
| 2026 | STL | MiLB | 23 | 3 | 10 | 0 | 24 | 23 | 93.2 | 11.63 | 4.90 | 1.06 | .277 | 64.4% | 32.1% | 10.4% | 4.61 | 3.06 | 4.75 | 5.15 | |||||
| 2027 | Steamer | PROJ | 24 | 0 | 0 | 0 | 0 | 0 | 1.0 | 6.12 | 4.78 | 1.50 | .284 | 69.7% | 36.5% | 5.44 | 5.67 | 5.62 | 0.0 |
Preseason ProjectionsMinor LeaguesCollege
| Season | Team | Level | W | L | ERA | G | GS | QS | CG | ShO | SV | HLD | BS | IP | TBF | H | R | ER | HR | BB | IBB | HBP | WP | BK | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | UL | NCAA | 4 | 3 | 4.40 | 22 | 4 | 0 | 0 | 2 | 45.0 | 201 | 32 | 23 | 22 | 4 | 29 | 7 | 1 | 2 | 50 | ||||
| 2025 | ASU | NCAA | 6 | 4 | 5.47 | 15 | 15 | 0 | 0 | 0 | 77.1 | 341 | 66 | 51 | 47 | 10 | 33 | 10 | 3 | 0 | 110 | ||||
| 2026 | STL | A | 1 | 7 | 4.30 | 16 | 16 | 0 | 0 | 0 | 0 | 0 | 60.2 | 264 | 42 | 33 | 29 | 5 | 34 | 0 | 7 | 2 | 1 | 86 | |
| 2026 | STL | A+ | 2 | 3 | 5.18 | 8 | 7 | 0 | 0 | 0 | 0 | 0 | 33.0 | 151 | 30 | 25 | 19 | 6 | 17 | 0 | 5 | 3 | 1 | 35 | |
| 2026 | STL | MiLB | 3 | 10 | 4.61 | 24 | 23 | 0 | 0 | 0 | 0 | 0 | 93.2 | 415 | 72 | 58 | 48 | 11 | 51 | 0 | 12 | 5 | 2 | 121 | |
| 2027 | Steamer | PROJ | 0 | 0 | 5.44 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 |
| Season | Team | Level | W | L | ERA | G | GS | QS | CG | ShO | SV | HLD | BS | IP | TBF | H | R | ER | HR | BB | IBB | HBP | WP | BK | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | UL | NCAA | 4 | 3 | 4.40 | 22 | 4 | 0 | 0 | 2 | 45.0 | 201 | 32 | 23 | 22 | 4 | 29 | 7 | 1 | 2 | 50 | ||||
| 2025 | ASU | NCAA | 6 | 4 | 5.47 | 15 | 15 | 0 | 0 | 0 | 77.1 | 341 | 66 | 51 | 47 | 10 | 33 | 10 | 3 | 0 | 110 | ||||
| 2026 | STL | A | 1 | 7 | 4.30 | 16 | 16 | 0 | 0 | 0 | 0 | 0 | 60.2 | 264 | 42 | 33 | 29 | 5 | 34 | 0 | 7 | 2 | 1 | 86 | |
| 2026 | STL | A+ | 2 | 3 | 5.18 | 8 | 7 | 0 | 0 | 0 | 0 | 0 | 33.0 | 151 | 30 | 25 | 19 | 6 | 17 | 0 | 5 | 3 | 1 | 35 | |
| 2026 | STL | MiLB | 3 | 10 | 4.61 | 24 | 23 | 0 | 0 | 0 | 0 | 0 | 93.2 | 415 | 72 | 58 | 48 | 11 | 51 | 0 | 12 | 5 | 2 | 121 | |
| 2027 | Steamer | PROJ | 0 | 0 | 5.44 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 |
Preseason ProjectionsMinor LeaguesAveragesCollege
| Season | Team | Level | K/9 | BB/9 | K/BB | HR/9 | divider | K% | BB% | K-BB% | divider | AVG | WHIP | BABIP | LOB% | divider | ERA- | FIP- | divider | FIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | UL | NCAA | 10.00 | 5.80 | 1.72 | 0.80 | 24.9% | 14.4% | 10.4% | .194 | 1.36 | .252 | 72.1% | 77 | 92 | 5.27 | ||||
| 2025 | ASU | NCAA | 12.80 | 3.84 | 3.33 | 1.16 | 32.3% | 9.7% | 22.6% | .221 | 1.28 | .315 | 61.1% | 103 | 83 | 4.44 | ||||
| 2026 | STL | A | 12.76 | 5.04 | 2.53 | 0.74 | 32.6% | 12.9% | 19.7% | .188 | 1.25 | .280 | 65.8% | 90 | 84 | 4.03 | ||||
| 2026 | STL | A+ | 9.55 | 4.64 | 2.06 | 1.64 | 23.2% | 11.3% | 11.9% | .233 | 1.42 | .273 | 61.9% | 98 | 116 | 6.07 | ||||
| 2026 | STL | MiLB | 11.63 | 4.90 | 2.37 | 1.06 | 29.2% | 12.3% | 16.9% | .205 | 1.31 | .277 | 64.4% | 93 | 95 | 4.75 | ||||
| 2027 | Steamer | PROJ | 6.12 | 4.78 | 1.28 | 1.50 | 14.9% | 11.6% | 3.3% | .265 | 1.59 | .284 | 69.7% | 5.67 |
| Season | Team | Level | K/9 | BB/9 | K/BB | HR/9 | divider | K% | BB% | K-BB% | divider | AVG | WHIP | BABIP | LOB% | divider | ERA- | FIP- | divider | FIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | UL | NCAA | 10.00 | 5.80 | 1.72 | 0.80 | 24.9% | 14.4% | 10.4% | .194 | 1.36 | .252 | 72.1% | 77 | 92 | 5.27 | ||||
| 2025 | ASU | NCAA | 12.80 | 3.84 | 3.33 | 1.16 | 32.3% | 9.7% | 22.6% | .221 | 1.28 | .315 | 61.1% | 103 | 83 | 4.44 | ||||
| 2026 | STL | A | 12.76 | 5.04 | 2.53 | 0.74 | 32.6% | 12.9% | 19.7% | .188 | 1.25 | .280 | 65.8% | 90 | 84 | 4.03 | ||||
| 2026 | STL | A+ | 9.55 | 4.64 | 2.06 | 1.64 | 23.2% | 11.3% | 11.9% | .233 | 1.42 | .273 | 61.9% | 98 | 116 | 6.07 | ||||
| 2026 | STL | MiLB | 11.63 | 4.90 | 2.37 | 1.06 | 29.2% | 12.3% | 16.9% | .205 | 1.31 | .277 | 64.4% | 93 | 95 | 4.75 | ||||
| 2027 | Steamer | PROJ | 6.12 | 4.78 | 1.28 | 1.50 | 14.9% | 11.6% | 3.3% | .265 | 1.59 | .284 | 69.7% | 5.67 |
Preseason ProjectionsMinor LeaguesCollege
| Season | Team | Level | GB/FB | LD% | GB% | FB% | IFFB% | HR/FB | IFH% | BUH% | divider | Pull% | Cent% | Oppo% | divider | Soft% | Med% | Hard% | divider | SIERA | xFIP- | xFIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | STL | A | 0.63 | 20.3% | 30.8% | 48.9% | 43.1% | 7.7% | 43.8% | 19.7% | 36.5% | 97 | 4.76 | |||||||||
| 2026 | STL | A+ | 0.76 | 20.9% | 34.1% | 45.1% | 46.3% | 14.6% | 37.2% | 29.8% | 33.0% | 112 | 5.88 | |||||||||
| 2026 | STL | MiLB | 0.68 | 20.5% | 32.1% | 47.3% | 44.3% | 10.4% | 41.1% | 23.8% | 35.1% | 102 | 5.15 | |||||||||
| 2027 | Steamer | PROJ | 20.6% | 36.5% | 42.8% | 5.62 |
| Season | Team | Level | GB/FB | LD% | GB% | FB% | IFFB% | HR/FB | IFH% | BUH% | divider | Pull% | Cent% | Oppo% | divider | Soft% | Med% | Hard% | divider | SIERA | xFIP- | xFIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | STL | A | 0.63 | 20.3% | 30.8% | 48.9% | 43.1% | 7.7% | 43.8% | 19.7% | 36.5% | 97 | 4.76 | |||||||||
| 2026 | STL | A+ | 0.76 | 20.9% | 34.1% | 45.1% | 46.3% | 14.6% | 37.2% | 29.8% | 33.0% | 112 | 5.88 | |||||||||
| 2026 | STL | MiLB | 0.68 | 20.5% | 32.1% | 47.3% | 44.3% | 10.4% | 41.1% | 23.8% | 35.1% | 102 | 5.15 | |||||||||
| 2027 | Steamer | PROJ | 20.6% | 36.5% | 42.8% | 5.62 |
Preseason ProjectionsMinor LeaguesCollege
MLB F-Strike%, SwStr%, CStr%, CSW% are from the Sports Info Solution data source.
All MiLB and Pace data are from Statcast.
All MiLB and Pace data are from Statcast.
Preseason ProjectionsMinor LeaguesAveragesCollege
Preseason ProjectionsMinor LeaguesCollege
