Last 5 Games
| Date | Tm | Opp | Result | App,Dec | DR | IP | H | R | ER | BB | SO | HR | HBP | WP | IBB | PO | BK | BF | Pit | Str | StL | StS | GB | FB | LD | PU | Unk | GmSc | IR | IS | WPA | aLI | cWPA | acLI | RE24 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-07-11 | MIA | CLE | L, 1-4 | 8-GF | 1 | 2.0 | 3 | 2 | 2 | 0 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 9 | 42 | 27 | 6 | 7 | 2 | 3 | 2 | 0 | 0 | 0 | 0 | -0.160 | 0.86 | -0.1% | 0.96 | -1.018 | ||
| 2026-07-09 | MIA | SEA | W, 8-4 | 8-8 | 5 | 0.1 | 2 | 2 | 2 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 5 | 17 | 7 | 2 | 0 | 0 | 3 | 1 | 0 | 0 | 0 | 0 | -0.053 | 0.50 | 0.0% | 0.70 | -2.411 | ||
| 2026-07-03 | MIA | @ | ATH | W, 12-5 | 9-GF | 17 | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 10 | 8 | 3 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0.002 | 0.02 | 0.0% | 0.02 | 0.544 | |
| 2026-06-15 | MIA | @ | PHI | L, 0-7 | 5-7 | 4 | 2.1 | 0 | 0 | 0 | 0 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 8 | 33 | 23 | 6 | 4 | 1 | 4 | 3 | 1 | 0 | 1 | 0 | 0.015 | 0.10 | 0.0% | 0.08 | 1.339 | |
| 2026-06-10 | MIA | ARI | W, 8-0 | 7-8, W | 4 | 2.0 | 0 | 0 | 0 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 36 | 19 | 5 | 5 | 1 | 2 | 1 | 1 | 0 | 0 | 0 | 0.004 | 0.04 | 0.0% | 0.03 | 0.982 |
| Season | Age | Team | Lg | WAR | W | L | G | GS | GF | CG | SHO | SV | IP | H | R | ER | HR | BB | IBB | SO | HBP | BK | WP | BF | Awards | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 25 | MIA | NL | 0.2 | 1 | 0 | 1.000 | 2.92 | 9 | 0 | 3 | 0 | 0 | 0 | 12.1 | 8 | 4 | 4 | 1 | 4 | 0 | 14 | 2 | 0 | 0 | 50 | 142 | 3.34 | 0.973 | 5.8 | 0.7 | 2.9 | 10.2 | 3.50 | |
| 1 Yr | 0.2 | 1 | 0 | 1.000 | 2.92 | 9 | 0 | 3 | 0 | 0 | 0 | 12.1 | 8 | 4 | 4 | 1 | 4 | 0 | 14 | 2 | 0 | 0 | 50 | 142 | 3.34 | 0.973 | 5.8 | 0.7 | 2.9 | 10.2 | 3.50 | ||||
| 162 Game Avg | 1.4 | 8 | 0 | 1.000 | 2.92 | 68 | 0 | 23 | 0 | 0 | 0 | 91 | 60 | 30 | 30 | 8 | 30 | 0 | 106 | 15 | 0 | 0 | 378 | 142 | 3.34 | 0.973 | 5.8 | 0.7 | 2.9 | 10.2 | 3.50 | ||||
| Season | Age | Team | Lg | IP | G | GS | R | RA9 | RA9opp | RA9def | RA9role | RA9extras | PPFp | RA9avg | RAA | WAA | gmLI | WAAadj | WAR | RAR | waaWL% | 162WL% | Awards |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 25 | MIA | NL | 12.1 | 9 | 0 | 4 | 2.92 | 4.46 | 0.00 | -0.29 | 0.00 | 96 | 4.01 | 1 | 0.2 | 0.27 | -0.1 | 0.2 | 3 | .518 | .501 | |
| 1 Yr | 12.1 | 9 | 0 | 4 | 2.92 | 4.46 | 0.00 | -0.29 | 0.00 | 96 | 4.01 | 1 | 0.2 | 0.27 | -0.1 | 0.2 | 3 | .518 | .501 | ||||
| 162 Game Avg | 91 | 68 | 0 | 30 | 2.92 | 4.46 | 0.00 | -0.29 | 0.00 | 96 | 4.01 | 11 | 1.2 | 0.27 | -0.7 | 1.4 | 20 | .518 | .501 | ||||
Win Probability *
Reliever Pitching *
- Data only available back to 1898
Ratio Pitching *
Pitch Summary -- Pitching *
Baserunning & Situational Stats *
Cumulative Pitching
Neutralized Pitching
* - Disclaimer & Completeness Note
Frequently Asked Questions
How old is William Kempner?
William Kempner is 25 years old.
When was William Kempner born?
William Kempner was born on June 18, 2001.
Where was William Kempner born?
William Kempner was born in San Jose, CA.
How tall is William Kempner?
William Kempner is 6-0 (183 cm) tall.
How much does William Kempner weigh?
William Kempner weighs 222 lbs (100 kg).
How many seasons has William Kempner played?
William Kempner is in his 1st season.
When was William Kempner drafted?
William Kempner was drafted by the San Francisco Giants in the 3rd round of the 2022 MLB June Amateur Draft from Gonzaga University (Spokane, WA).
What position does William Kempner play?
William Kempner is a Pitcher.
How many strikeouts does William Kempner have?
William Kempner has 14 strikeouts this season and has 14 strikeouts over his career.
How many teams has William Kempner played for?
William Kempner has played for 1 team, the Miami Marlins.
What is William Kempner's Instagram account?
William Kempner is on Instagram at kemmpy.
Batting Against -- Pitching *