NYM @ WSHFinal 4-6, Sep 27, 2026
IP 0.2, H 0, R 0, ER 0, BB 0, K 1, HR 0, PC-ST 16-10, ERA 2.45, PC 16
BaseballMLBWashington NationalsRelief pitcher
Jack Sinclair
Stats, career and game logJack Sinclair is an MLB relief pitcher for the Washington Nationals, wearing number 49, who made his debut on Sep 4, 2026.
Updated
About Jack Sinclair
Jack Sinclair is a relief pitcher for the Washington Nationals and wears number 49. Born on May 3, 1999, in Coral Springs, Florida, United States, he bats right-handed and throws right-handed. He played college baseball for the UCF Knights. Sinclair has played for the Washington Nationals since 2026, and he made his MLB debut on Sep 4, 2026, with the Washington Nationals.
Agatha Research DeskUpdated Oct 5, 2026How he is doing now
Nationals77-852026 regular season
Injury status
No injury reports on file.
Game log
NYM @ WSHFinal 6-7, Sep 25, 2026
IP 1.0, H 2, R 1, ER 1, BB 0, K 1, HR 0, PC-ST 18-11, ERA 2.61, PC 18
WSH @ DETFinal 4-2, Sep 23, 2026
IP 0.1, H 0, R 0, ER 0, BB 0, K 0, HR 0, PC-ST 4-2, ERA 1.93, PC 4
WSH @ DETFinal 3-1, Sep 22, 2026
IP 1.1, H 0, R 0, ER 0, BB 0, K 1, HR 0, PC-ST 14-8, ERA 2.00, PC 14
Show all 10 games
WSH @ STLFinal 8-5, Sep 19, 2026
IP 1.1, H 1, R 0, ER 0, BB 0, K 0, HR 0, PC-ST 13-10, ERA 2.35, PC 13
WSH @ STLFinal 9-1, Sep 18, 2026
IP 1.0, H 1, R 1, ER 1, BB 1, K 0, HR 0, PC-ST 11-7, ERA 2.84, PC 11
LAA @ WSHFinal 5-6, Sep 13, 2026
IP 1.0, H 1, R 1, ER 1, BB 0, K 1, HR 0, PC-ST 12-8, ERA 1.69, PC 12
LAA @ WSHFinal 5-6, Sep 12, 2026
IP 1.1, H 0, R 0, ER 0, BB 1, K 1, HR 0, PC-ST 21-13, ERA 0.00, PC 21
WSH @ SDFinal 2-3, Sep 7, 2026
IP 1.1, H 1, R 0, ER 0, BB 1, K 0, HR 0, PC-ST 18-9, ERA 0.00, PC 18
WSH @ LADFinal 5-6, Sep 5, 2026
IP 0.2, H 0, R 0, ER 0, BB 1, K 2, HR 0, PC-ST 24-13, ERA 0.00, PC 24
Box score lines from ESPN.
Sources and updates
Stats, scores and injury reports come from Agatha's own records: MLB's own box scores, its transactions and ESPN's injury reports.
Updated Oct 5, 2026, 11:12 PM ET. Results and form refresh after every game; biography facts are checked weekly.