Cooper Hjerpe
Career Stats, Bio & Records (2026)
Cooper Hjerpe is a pitcher who has played in Major League Baseball since 2026 for the St. Louis Cardinals. Across 4 career appearances, he has gone 1-0 with a 4.38 ERA and 15 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
- L / L
- Height / Weight
- 6'3" / 200 lb
- MLB Debut
- 2026-09-06
- Jersey
- #56
- Draft
- 2022
Full name: Cooper Hjerpe Hjerpe
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 | STL | NL | 1 | 0 | 4 | 0 | 0 | 0 | 0 | 12.1 | 7 | 6 | 9 | 15 | 4.38 | 4.18 (-5%) | - |
| Career · 1 season | 1 | 0 | 4 | 0 | 0 | 0 | 0 | 12.1 | 7 | 6 | 9 | 15 | 4.38 | — | 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.
Cooper Hjerpe: the record in brief
Cooper Hjerpe's major league record starts with the debut on September 6, 2026 and remains open, because the career is ongoing. All of the seasons listed were played for the St. Louis Cardinals. Hjerpe is listed at 6-foot-3 and 200 pounds. Hjerpe batted and threw left-handed, per the bio block. The recorded birth is March 16, 2001, in Davis, CA, USA.
Across 4 games (0 starts), Hjerpe has recorded 1 win against 0 losses with a 4.38 ERA. The same table counts 15 strikeouts. Hjerpe's 4.38 ERA was close to the 4.18 league figure for those seasons. Hjerpe's only pitching season is 2026: 4 games, 15 strikeouts.
The draft line shows 2022.
Frequently Asked Questions about Cooper Hjerpe
- Was Cooper Hjerpe a pitcher?
- Yes. Cooper Hjerpe pitched in the major leagues, recording 1 wins and 15 strikeouts.
- What teams has Cooper Hjerpe played for?
- Cooper Hjerpe has played for one team, the St. Louis Cardinals (2026).
- What are Cooper Hjerpe's career stats?
- In 4 games, Cooper Hjerpe has gone 1-0 with a 4.38 ERA, 15 strikeouts, and 12.1 innings pitched.
- How tall is Cooper Hjerpe and how much does he weigh?
- Cooper Hjerpe is listed at 6 feet 3 inches and 200 pounds.
- What number does Cooper Hjerpe wear?
- Cooper Hjerpe wears number 56, according to MLB's 2026 roster data.
- What was Cooper Hjerpe's career ERA?
- Cooper Hjerpe finished with a 4.38 career ERA, going 1-0 with 15 strikeouts.
- How many strikeouts did Cooper Hjerpe have?
- Cooper Hjerpe recorded 15 career strikeouts.