Jack Ralston
Career Stats, Bio & Records (2026)
Jack Ralston is a pitcher who has played in Major League Baseball since 2026 for the Miami Marlins. Across 16 career appearances, he has gone 0-3 with a 5.71 ERA and 19 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
- 6'6" / 231 lb
- MLB Debut
- 2026-08-23
- Jersey
- #79
- Draft
- 2019
Full name: Jack Ralston Ralston
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 | MIA | NL | 0 | 3 | 16 | 1 | 0 | 0 | 0 | 17.1 | 15 | 11 | 9 | 19 | 5.71 | 4.18 (-37%) | - |
| Career · 1 season | 0 | 3 | 16 | 1 | 0 | 0 | 0 | 17.1 | 15 | 11 | 9 | 19 | 5.71 | — | 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 Ralston: the record in brief
Active since a debut on August 23, 2026, Jack Ralston has a record on this page that is still being added to. Ralston's only club in the season tables is the Miami Marlins. Ralston both batted and threw right-handed. Born on August 13, 1997, in Panorama City, CA, USA, Ralston was listed at 231 pounds on a 6-foot-6 frame.
Across 16 games (1 starts), Ralston has recorded 0 wins against 3 losses with a 5.71 ERA. Also on Ralston's record: 19 strikeouts. The league ERA over Ralston's seasons was 4.18, so the 5.71 figure ran 36.7% worse than average. All of that pitching came in 2026, with 16 games and 19 strikeouts.
The draft line shows 2019.
Frequently Asked Questions about Jack Ralston
- Was Jack Ralston a pitcher?
- Yes. Jack Ralston pitched in the major leagues, recording 0 wins and 19 strikeouts.
- What was Jack Ralston's career ERA?
- Jack Ralston finished with a 5.71 career ERA, going 0-3 with 19 strikeouts.
- How many strikeouts did Jack Ralston have?
- Jack Ralston recorded 19 career strikeouts.
- Is Jack Ralston in the Hall of Fame?
- No. Jack Ralston has not been inducted into the National Baseball Hall of Fame.
- What teams did Jack Ralston play for?
- Jack Ralston played for the Miami Marlins.