Jack Sinclair | Washington Nationals
MLB Player
Jack Sinclair
Washington NationalsHeight6' 4"Weight170 lbsAge27Experience1st Season
1SVTied-150th
2.45ERA
8KTied-645th
0.91WHIP
Player Information
PositionRelief Pitcher
Jersey#49
Date of Birth3/5/1999
BirthplaceCoral Springs, FL
Experience1st Season
Bats / ThrowsRight/Right
MLB Debut2026
StatusActive
Next Game
More Washington Nationals Players
Season, Postseason & Career
| Split | GP | GS | CG | SHO | IP | H | R | ER | HR | BB | K |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Regular Season | 11 | 0 | 0 | 0 | 11.0 | 6 | 3 | 3 | 0 | 4 | 8 |
| Career | 11 | 0 | 0 | 0 | 11.0 | 6 | 3 | 3 | 0 | 4 | 8 |
Pitching by Season
| Season | GP | GS | W | L | W% | WAR | ERA | WHIP | IP | K | BB | K/BB | H | R | ER | SV | HLD | BLSV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 11 | 0 | 1 | 0 | 1.000 | 0.4 | 2.45 | 0.91 | 11.0 | 8 | 4 | 2.0 | 6 | 3 | 3 | 1 | 5 | 0 |
| Career | 11 | 0 | 1 | 0 | 1.000 | -- | 2.45 | 0.91 | 11.0 | 8 | 4 | 2.0 | 6 | 3 | 3 | 1 | 5 | 0 |
Opponent Batting by Season
| Season | P | TBF | P-TBF | OBA | OOBP | OSLUG | OOPS | 2B | 3B | HR | TB | RBI | BH | SH | SF | IBB |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 167 | 46 | 3.630 | .158 | .283 | .237 | .519 | 3 | 0 | 0 | 9 | 4 | 3 | 0 | 1 | 0 |
| Career | 167 | 46 | 3.630 | .158 | .283 | .237 | .519 | 3 | 0 | 0 | 9 | 4 | 3 | 0 | 1 | 0 |
Expanded Pitching by Season
| Season | P/S | P/I | K/9 | QS | CG | SHO | GSC | GB | FB | G/F | IR | IRS | WP | BK | SB | CS | RSUP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0.0 | 15.2 | 6.5 | 0 | 0 | 0 | 0.0 | 16 | 15 | 1.1 | 6 | 1 | 0 | 1 | 1 | 0 | 0.0 |
| Career | 0.0 | 15.2 | 6.5 | 0 | 0 | 0 | 0.0 | 16 | 15 | 1.1 | 6 | 1 | 0 | 1 | 1 | 0 | 0.0 |
Game Log
| Game | Result | IP | H | R | ER | HR | BB | K | GB | FB | P | TBF | GSC | Dec | Rel | ERA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 vs NYM2026 Regular Season | W 6-4 | 0.2 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 16 | 3 | 0.0 | - | HLD(5) | 2.45 |
| vs NYM2026 Regular Season | W 7-6 | 1.0 | 2 | 1 | 1 | 0 | 0 | 1 | 2 | 2 | 18 | 5 | 0.0 | - | HLD(4) | 2.61 |
 @ DET2026 Regular Season | W 4-2 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 1 | 0.0 | - | HLD(3) | 1.93 |
| @ DET2026 Regular Season | W 3-1 | 1.1 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 14 | 5 | 0.0 | - | HLD(2) | 2.00 |
 @ STL2026 Regular Season | W 8-5 F/11 | 1.1 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 13 | 5 | 0.0 | - | HLD(1) | 2.35 |
| @ STL2026 Regular Season | W 9-1 | 1.0 | 1 | 1 | 1 | 0 | 1 | 0 | 2 | 2 | 11 | 5 | 0.0 | - | - | 2.84 |
 vs LAA2026 Regular Season | W 6-5 | 1.0 | 1 | 1 | 1 | 0 | 0 | 1 | 2 | 1 | 12 | 4 | 0.0 | - | SV(1) | 1.69 |
| vs LAA2026 Regular Season | W 6-5 F/10 | 1.1 | 0 | 0 | 0 | 0 | 1 | 1 | 3 | 0 | 21 | 5 | 0.0 | W(1-0) | - | 0.00 |
 @ SD2026 Regular Season | L 3-2 | 1.1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 4 | 18 | 6 | 0.0 | - | - | 0.00 |
 @ LAD2026 Regular Season | L 6-5 | 0.2 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 24 | 4 | 0.0 | - | - | 0.00 |
| @ LAD2026 Regular Season | L 5-3 | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 16 | 3 | 0.0 | - | - | 0.00 |
