William Kempner
William McCullough Kempner
Born: June 18, 2001
San Jose, CA US
Primary Position: Pitcher
Bats: Right
Throws: Right
Height: 6'0"
Weight: 222
Career: 2022-2025
William Kempner compiled a career record of 5 wins and 5 losses and a 4.06 ERA in his 47-game pitching career with the San Jose Giants, Giants Black, Eugene Emeralds, Richmond Flying Squirrels, Scottsdale Scorpions, Beloit Sky Carp, Pensacola Blue Wahoos and Jacksonville Jumbo Shrimp. He began playing during the 2022 season and last took the field during the 2025 campaign.
 Giants Black |
 San Jose Giants |
 Richmond Flying Squirrels |
 Eugene Emeralds |
 Scottsdale Scorpions |
 Beloit Sky Carp |
 Pensacola Blue Wahoos |
 Jacksonville Jumbo Shrimp |
Click on column headings to sort.
Pitching:
| Year | Level | Lg | Team | W | L | W% | ERA | G | GS | GF | CG | SHO | SV | IP | H | R | ER | HR | BB | IBB | SO | HBP | BK | WP | BF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | R | AZCL | Giants Black | 1 | 0 | 1.000 | 2.70 | 2 | 0 | 0 | 0 | 0 | 0 | 3.3 | 4 | 1 | 1 | 0 | 2 | 0 | 5 | 0 | 0 | 3 | 15 |
| 2022 | A | CALL | San Jose Giants | 0 | 0 | 6.35 | 3 | 2 | 0 | 0 | 0 | 0 | 5.7 | 6 | 4 | 4 | 1 | 4 | 0 | 6 | 2 | 0 | 0 | 28 | |
| 2023 | AA | EL | Richmond Flying Squirrels | 0 | 0 | 5.40 | 1 | 0 | 0 | 0 | 0 | 0 | 1.7 | 3 | 1 | 1 | 0 | 2 | 0 | 2 | 0 | 0 | 0 | 10 | |
| 2023 | A | CALL | San Jose Giants | 1 | 3 | .250 | 4.67 | 14 | 5 | 4 | 0 | 0 | 1 | 27.0 | 21 | 18 | 14 | 0 | 15 | 0 | 29 | 5 | 0 | 2 | 124 |
| 2023 | Advanced A | NORW | Eugene Emeralds | 3 | 2 | .600 | 2.91 | 23 | 0 | 9 | 0 | 0 | 0 | 34.0 | 28 | 15 | 11 | 5 | 13 | 0 | 47 | 5 | 0 | 5 | 144 |
| 2024 | Fall | AZFL | Scottsdale Scorpions | 0 | 0 | 7.36 | 4 | 0 | 1 | 0 | 0 | 0 | 3.7 | 2 | 3 | 3 | 0 | 3 | 0 | 7 | 0 | 0 | 2 | 16 | |
| 2025 | Advanced A | MIDW | Beloit Sky Carp | 1 | 2 | .333 | 2.86 | 19 | 0 | 12 | 0 | 0 | 6 | 28.3 | 19 | 11 | 9 | 0 | 10 | 0 | 39 | 3 | 1 | 2 | 111 |
| 2025 | AA | SOUL | Pensacola Blue Wahoos | 3 | 1 | .750 | 1.12 | 16 | 0 | 6 | 0 | 0 | 0 | 24.0 | 11 | 4 | 3 | 0 | 15 | 0 | 31 | 2 | 0 | 1 | 96 |
| 2025 | AAA | IL | Jacksonville Jumbo Shrimp | 3 | 0 | 1.000 | 2.65 | 13 | 0 | 2 | 0 | 0 | 1 | 17.0 | 8 | 5 | 5 | 2 | 15 | 0 | 25 | 3 | 0 | 1 | 76 |
| Totals | 5 | 5 | .500 | 4.06 | 47 | 7 | 14 | 0 | 0 | 1 | 75.3 | 64 | 42 | 34 | 6 | 39 | 0 | 96 | 12 | 0 | 12 | 337 |
Fielding:
| Year | Level | Lg | Team | Pos | GP | PO | A | E | DP | Fld% | RF/G |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | A | CALL | San Jose Giants | P | 3 | 1 | 0 | 0 | 1 | 1.000 | .333 |
| 2022 | R | AZCL | Giants Black | P | 2 | 0 | 0 | 0 | 0 | .000 | |
| 2023 | Advanced A | NORW | Eugene Emeralds | P | 23 | 3 | 1 | 1 | 0 | .800 | .174 |
| 2023 | A | CALL | San Jose Giants | P | 14 | 1 | 8 | 0 | 1 | 1.000 | .643 |
| 2023 | AA | EL | Richmond Flying Squirrels | P | 1 | 0 | 0 | 0 | 0 | .000 | |
| 2024 | Fall | AZFL | Scottsdale Scorpions | P | 4 | 0 | 0 | 0 | 0 | .000 | |
| 2025 | Advanced A | MIDW | Beloit Sky Carp | P | 19 | 0 | 0 | 2 | 0 | .000 | .000 |
| 2025 | AA | SOUL | Pensacola Blue Wahoos | P | 16 | 2 | 2 | 0 | 0 | 1.000 | .250 |
| 2025 | AAA | IL | Jacksonville Jumbo Shrimp | P | 13 | 1 | 2 | 0 | 0 | 1.000 | .231 |
| Totals | 42 | 4 | 9 | 1 | 1 | .929 | .310 |
Minor League Service:
| Year | Level | League | Team | Affiliation | First Appearance | Final Appearance |
|---|---|---|---|---|---|---|
| 2022 | R | Arizona Complex League | Giants Black | SFN | August 18, 2022 | August 22, 2022 |
| 2022 | A | California League | San Jose Giants | SFN | September 1, 2022 | September 11, 2022 |
| 2023 | A | California League | San Jose Giants | SFN | April 8, 2023 | June 11, 2023 |
| 2023 | Advanced A | Northwest League | Eugene Emeralds | SFN | June 14, 2023 | September 8, 2023 |
| 2023 | AA | Eastern League | Richmond Flying Squirrels | SFN | September 16, 2023 | September 16, 2023 |
| 2024 | Fall | Arizona Fall League | Scottsdale Scorpions | October 11, 2024 | November 11, 2024 | |
| 2025 | Advanced A | Midwest League | Beloit Sky Carp | |||
| 2025 | AA | Southern League | Pensacola Blue Wahoos | |||
| 2025 | AAA | International League | Jacksonville Jumbo Shrimp |
Persons data from the Chadwick Baseball Bureau are Copyright Chadwick Baseball Bureau, and are made available under the Open Data Commons Attribution License.
