Alfonso Perez
San Francisco Giants (DSL)P
Age: 21
Bats/Throws: R/R
6'2" / 175
DOB: 8/14/2005
(21 years, 2 months, 5 days)
P
Player Dashboard:
| Season | 2026 |
| Team | SFG |
| Level | MiLB |
| G | 3 |
| GS | 2 |
| IP | 4.0 |
| K% | 11.8% |
| BB% | 23.5% |
| GB% | 54.5% |
| ERA | 2.25 |
| FIP | 6.47 |
| WAR |
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| Season | 2026 |
| Team | SFG |
| Level | MiLB |
| G | 3 |
| GS | 2 |
| IP | 4.0 |
| K% | 11.8% |
| BB% | 23.5% |
| GB% | 54.5% |
| ERA | 2.25 |
| FIP | 6.47 |
| WAR |
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Preseason ProjectionsMinor Leagues
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 16 | 0 | 1 | 0 | 14 | 0 | 16.2 | 5.94 | 4.86 | 0.00 | .361 | 41.7% | 33.3% | 0.0% | 7.56 | 5.01 | 6.20 | ||||||
| 2023 | SFG | DSL | 17 | 2 | 1 | 0 | 11 | 10 | 45.0 | 5.00 | 3.00 | 0.80 | .237 | 58.7% | 34.3% | 6.8% | 3.80 | 5.22 | 5.02 | ||||||
| 2024 | SFG | DSL | 18 | 0 | 3 | 0 | 11 | 8 | 38.2 | 6.75 | 4.19 | 0.47 | .276 | 68.2% | 46.1% | 5.1% | 4.42 | 5.17 | 5.06 | ||||||
| 2025 | SFG | DSL | 19 | 2 | 2 | 0 | 14 | 0 | 23.2 | 10.65 | 3.04 | 0.38 | .345 | 72.8% | 47.4% | 5.0% | 3.42 | 3.74 | 3.77 | ||||||
| 2026 | Steamer | PROJ | 20 | 0 | 0 | 0 | 1 | 0 | 1.0 | 4.45 | 7.95 | 1.54 | .297 | 67.7% | 40.8% | 7.04 | 7.19 | 7.07 | 0.0 | ||||||
| 2026 | SFG | DSL | 20 | 0 | 0 | 0 | 3 | 2 | 4.0 | 4.50 | 9.00 | 0.00 | .182 | 83.3% | 54.5% | 0.0% | 2.25 | 6.47 | 7.29 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 16 | 0 | 1 | 0 | 14 | 0 | 16.2 | 5.94 | 4.86 | 0.00 | .361 | 41.7% | 33.3% | 0.0% | 7.56 | 5.01 | 6.20 | ||||||
| 2023 | SFG | DSL | 17 | 2 | 1 | 0 | 11 | 10 | 45.0 | 5.00 | 3.00 | 0.80 | .237 | 58.7% | 34.3% | 6.8% | 3.80 | 5.22 | 5.02 | ||||||
| 2024 | SFG | DSL | 18 | 0 | 3 | 0 | 11 | 8 | 38.2 | 6.75 | 4.19 | 0.47 | .276 | 68.2% | 46.1% | 5.1% | 4.42 | 5.17 | 5.06 | ||||||
| 2025 | SFG | DSL | 19 | 2 | 2 | 0 | 14 | 0 | 23.2 | 10.65 | 3.04 | 0.38 | .345 | 72.8% | 47.4% | 5.0% | 3.42 | 3.74 | 3.77 | ||||||
| 2026 | Steamer | PROJ | 20 | 0 | 0 | 0 | 1 | 0 | 1.0 | 4.45 | 7.95 | 1.54 | .297 | 67.7% | 40.8% | 7.04 | 7.19 | 7.07 | 0.0 | ||||||
| 2026 | SFG | DSL | 20 | 0 | 0 | 0 | 3 | 2 | 4.0 | 4.50 | 9.00 | 0.00 | .182 | 83.3% | 54.5% | 0.0% | 2.25 | 6.47 | 7.29 |
Preseason ProjectionsMinor Leagues
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 0 | 1 | 7.56 | 14 | 0 | 0 | 0 | 0 | 0 | 1 | 16.2 | 86 | 22 | 21 | 14 | 0 | 9 | 0 | 5 | 7 | 1 | 11 | |
| 2023 | SFG | DSL | 2 | 1 | 3.80 | 11 | 10 | 0 | 0 | 0 | 0 | 0 | 45.0 | 186 | 37 | 26 | 19 | 4 | 15 | 0 | 3 | 9 | 0 | 25 | |
| 2024 | SFG | DSL | 0 | 3 | 4.42 | 11 | 8 | 0 | 0 | 0 | 0 | 1 | 38.2 | 173 | 34 | 21 | 19 | 2 | 18 | 0 | 8 | 5 | 3 | 29 | |
| 2025 | SFG | DSL | 2 | 2 | 3.42 | 14 | 0 | 0 | 0 | 0 | 1 | 1 | 23.2 | 99 | 21 | 10 | 9 | 1 | 8 | 0 | 4 | 2 | 0 | 28 | |
| 2026 | Steamer | PROJ | 0 | 0 | 7.04 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | |||
| 2026 | SFG | DSL | 0 | 0 | 2.25 | 3 | 2 | 0 | 0 | 0 | 1 | 0 | 4.0 | 17 | 2 | 1 | 1 | 0 | 4 | 0 | 0 | 0 | 0 | 2 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 0 | 1 | 7.56 | 14 | 0 | 0 | 0 | 0 | 0 | 1 | 16.2 | 86 | 22 | 21 | 14 | 0 | 9 | 0 | 5 | 7 | 1 | 11 | |
| 2023 | SFG | DSL | 2 | 1 | 3.80 | 11 | 10 | 0 | 0 | 0 | 0 | 0 | 45.0 | 186 | 37 | 26 | 19 | 4 | 15 | 0 | 3 | 9 | 0 | 25 | |
| 2024 | SFG | DSL | 0 | 3 | 4.42 | 11 | 8 | 0 | 0 | 0 | 0 | 1 | 38.2 | 173 | 34 | 21 | 19 | 2 | 18 | 0 | 8 | 5 | 3 | 29 | |
| 2025 | SFG | DSL | 2 | 2 | 3.42 | 14 | 0 | 0 | 0 | 0 | 1 | 1 | 23.2 | 99 | 21 | 10 | 9 | 1 | 8 | 0 | 4 | 2 | 0 | 28 | |
| 2026 | Steamer | PROJ | 0 | 0 | 7.04 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | |||
| 2026 | SFG | DSL | 0 | 0 | 2.25 | 3 | 2 | 0 | 0 | 0 | 1 | 0 | 4.0 | 17 | 2 | 1 | 1 | 0 | 4 | 0 | 0 | 0 | 0 | 2 |
Preseason ProjectionsMinor LeaguesAverages
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 5.94 | 4.86 | 1.22 | 0.00 | 12.8% | 10.5% | 2.3% | .306 | 1.86 | .361 | 41.7% | 160 | 111 | 5.01 | ||||
| 2023 | SFG | DSL | 5.00 | 3.00 | 1.67 | 0.80 | 13.4% | 8.1% | 5.4% | .220 | 1.16 | .237 | 58.7% | 79 | 105 | 5.22 | ||||
| 2024 | SFG | DSL | 6.75 | 4.19 | 1.61 | 0.47 | 16.8% | 10.4% | 6.4% | .231 | 1.34 | .276 | 68.2% | 92 | 105 | 5.17 | ||||
| 2025 | SFG | DSL | 10.65 | 3.04 | 3.50 | 0.38 | 28.3% | 8.1% | 20.2% | .241 | 1.23 | .345 | 72.8% | 67 | 72 | 3.74 | ||||
| 2026 | Steamer | PROJ | 4.45 | 7.95 | 0.56 | 1.54 | 9.9% | 17.7% | -7.8% | .291 | 2.06 | .297 | 67.7% | 7.19 | ||||||
| 2026 | SFG | DSL | 4.50 | 9.00 | 0.50 | 0.00 | 11.8% | 23.5% | -11.8% | .154 | 1.50 | .182 | 83.3% | 36 | 102 | 6.47 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 5.94 | 4.86 | 1.22 | 0.00 | 12.8% | 10.5% | 2.3% | .306 | 1.86 | .361 | 41.7% | 160 | 111 | 5.01 | ||||
| 2023 | SFG | DSL | 5.00 | 3.00 | 1.67 | 0.80 | 13.4% | 8.1% | 5.4% | .220 | 1.16 | .237 | 58.7% | 79 | 105 | 5.22 | ||||
| 2024 | SFG | DSL | 6.75 | 4.19 | 1.61 | 0.47 | 16.8% | 10.4% | 6.4% | .231 | 1.34 | .276 | 68.2% | 92 | 105 | 5.17 | ||||
| 2025 | SFG | DSL | 10.65 | 3.04 | 3.50 | 0.38 | 28.3% | 8.1% | 20.2% | .241 | 1.23 | .345 | 72.8% | 67 | 72 | 3.74 | ||||
| 2026 | Steamer | PROJ | 4.45 | 7.95 | 0.56 | 1.54 | 9.9% | 17.7% | -7.8% | .291 | 2.06 | .297 | 67.7% | 7.19 | ||||||
| 2026 | SFG | DSL | 4.50 | 9.00 | 0.50 | 0.00 | 11.8% | 23.5% | -11.8% | .154 | 1.50 | .182 | 83.3% | 36 | 102 | 6.47 |
Preseason ProjectionsMinor Leagues
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 0.68 | 17.5% | 33.3% | 49.1% | 25.0% | 0.0% | 59.0% | 13.1% | 27.9% | 136 | 6.20 | |||||||||
| 2023 | SFG | DSL | 0.80 | 22.6% | 34.3% | 43.1% | 22.0% | 6.8% | 52.1% | 22.2% | 25.7% | 103 | 5.02 | |||||||||
| 2024 | SFG | DSL | 1.36 | 20.0% | 46.1% | 33.9% | 25.6% | 5.1% | 54.2% | 18.6% | 27.1% | 104 | 5.06 | |||||||||
| 2025 | SFG | DSL | 1.35 | 17.5% | 47.4% | 35.1% | 20.0% | 5.0% | 57.6% | 22.0% | 20.3% | 71 | 3.77 | |||||||||
| 2026 | Steamer | PROJ | 20.5% | 40.8% | 38.7% | 7.07 | ||||||||||||||||
| 2026 | SFG | DSL | 1.50 | 9.1% | 54.5% | 36.4% | 50.0% | 0.0% | 63.6% | 18.2% | 18.2% | 117 | 7.29 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 0.68 | 17.5% | 33.3% | 49.1% | 25.0% | 0.0% | 59.0% | 13.1% | 27.9% | 136 | 6.20 | |||||||||
| 2023 | SFG | DSL | 0.80 | 22.6% | 34.3% | 43.1% | 22.0% | 6.8% | 52.1% | 22.2% | 25.7% | 103 | 5.02 | |||||||||
| 2024 | SFG | DSL | 1.36 | 20.0% | 46.1% | 33.9% | 25.6% | 5.1% | 54.2% | 18.6% | 27.1% | 104 | 5.06 | |||||||||
| 2025 | SFG | DSL | 1.35 | 17.5% | 47.4% | 35.1% | 20.0% | 5.0% | 57.6% | 22.0% | 20.3% | 71 | 3.77 | |||||||||
| 2026 | Steamer | PROJ | 20.5% | 40.8% | 38.7% | 7.07 | ||||||||||||||||
| 2026 | SFG | DSL | 1.50 | 9.1% | 54.5% | 36.4% | 50.0% | 0.0% | 63.6% | 18.2% | 18.2% | 117 | 7.29 |
Preseason ProjectionsMinor Leagues
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 LeaguesAverages
| Season | Team | Level | O-Swing% | Z-Swing% | Swing% | divider | O-Contact% | Z-Contact% | Contact% | Zone% | divider | F-Strike% | SwStr% | CStr% | CSW% | divider | Pace |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 61.5% | 69.3% | 11.6% | 18.9% | 4.2% | 23.1% | |||||||||
| 2023 | SFG | DSL | 67.0% | 70.4% | 11.3% | 19.8% | 5.0% | 24.8% | |||||||||
| 2024 | SFG | DSL | 66.3% | 58.7% | 13.3% | 27.4% | 1.3% | 28.7% | |||||||||
| 2025 | SFG | DSL | 44.5% | 80.7% | 47.5% | 8.6% | 15.6% | 24.2% | |||||||||
| 2026 | SFG | DSL | 43.3% | 89.7% | 35.3% | 4.5% | 11.9% | 16.4% |
| Season | Team | Level | O-Swing% | Z-Swing% | Swing% | divider | O-Contact% | Z-Contact% | Contact% | Zone% | divider | F-Strike% | SwStr% | CStr% | CSW% | divider | Pace |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 61.5% | 69.3% | 11.6% | 18.9% | 4.2% | 23.1% | |||||||||
| 2023 | SFG | DSL | 67.0% | 70.4% | 11.3% | 19.8% | 5.0% | 24.8% | |||||||||
| 2024 | SFG | DSL | 66.3% | 58.7% | 13.3% | 27.4% | 1.3% | 28.7% | |||||||||
| 2025 | SFG | DSL | 44.5% | 80.7% | 47.5% | 8.6% | 15.6% | 24.2% | |||||||||
| 2026 | SFG | DSL | 43.3% | 89.7% | 35.3% | 4.5% | 11.9% | 16.4% |
