Jack Sinclair
Career Stats, Bio & Records (2026)
Jack Sinclair is a pitcher who has played in Major League Baseball since 2026. Across 11 career appearances, he has gone 1-0 with a 2.45 ERA and 8 strikeouts.
- W (Wins):
- Games credited to a pitcher whose team took a lead it never surrendered while he was the pitcher of record.
- ERA (Earned Run Average):
- Earned runs allowed per nine innings pitched: (ER × 9) ÷ IP. The primary measure of pitching effectiveness.
- SO (Strikeouts):
- For a batter, times retired on a third strike; for a pitcher, batters retired on a third strike.
- WHIP (Walks and Hits per Inning Pitched):
- Baserunners allowed per inning: (BB + H) ÷ IP. Under 1.00 is elite.
Data updated
- Bats / Throws
- R / R
- Height / Weight
- 6'4" / 170 lb
- MLB Debut
- 2026-09-04
- Jersey
- #49
- Draft
- 2021
Full name: Jack Sinclair Sinclair
Season-by-Season Pitching
Click a stat to plot it across every season.
| Year | Team | Lg | W | L | G | GS | CG | SHO | SV | IP | H | ER | BB | SO | ERA | Lg ERA | Pitcher PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | WSH | NL | 1 | 0 | 11 | 0 | 0 | 0 | 1 | 11.0 | 6 | 3 | 4 | 8 | 2.45 | 4.18 (+41%) | - |
| Career · 1 season | 1 | 0 | 11 | 0 | 0 | 0 | 1 | 11.0 | 6 | 3 | 4 | 8 | 2.45 | — | 0 | ||
Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.
Jack Sinclair: the record in brief
Jack Sinclair made a major league debut on September 4, 2026 and is still active, so the totals on this page keep changing. Sinclair's only club in the season tables is the Washington Nationals. Sinclair is listed at 6'4" and 170 pounds. Sinclair batted and threw right-handed, per the bio block. Sinclair was born on May 3, 1999, in Coral Springs, FL, USA.
Sinclair has pitched in 11 games, starting 0, and owns a 1-0 record and 2.45 ERA. Also on Sinclair's record: 8 strikeouts. Against a 4.18 league ERA for the same years, Sinclair was 41.2% better. Sinclair's only pitching season is 2026: 11 games, 8 strikeouts.
The draft line shows 2021.
Frequently Asked Questions about Jack Sinclair
- Was Jack Sinclair a pitcher?
- Yes. Jack Sinclair pitched in the major leagues, recording 1 wins and 8 strikeouts.
- What teams has Jack Sinclair played for?
- Jack Sinclair has played for one team, the Washington Nationals (2026).
- What are Jack Sinclair's career stats?
- In 11 games, Jack Sinclair has gone 1-0 with a 2.45 ERA, 8 strikeouts, 11.0 innings pitched, and 1 saves.
- How tall is Jack Sinclair and how much does he weigh?
- Jack Sinclair is listed at 6 feet 4 inches and 170 pounds.
- What number does Jack Sinclair wear?
- Jack Sinclair wears number 49, according to MLB's 2026 roster data.
- What was Jack Sinclair's career ERA?
- Jack Sinclair finished with a 2.45 career ERA, going 1-0 with 8 strikeouts.
- How many strikeouts did Jack Sinclair have?
- Jack Sinclair recorded 8 career strikeouts.