John Klein
Career Stats, Bio & Records (2026)
John Klein is a pitcher who has played in Major League Baseball since 2026 for the Minnesota Twins. Across 3 career appearances, he has gone 0-1 with a 4.15 ERA and 2 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
Active Player
W–L
0–1
ERA
4.15
WHIP
1.62
SO
2
- Bats / Throws
- R / R
- Height / Weight
- 6'5" / 225 lb
- MLB Debut
- 2026-05-02
- Draft
- 2022
Full name: John Klein Klein
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 | MIN | AL | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 4.3 | 3 | 2 | 4 | 2 | 4.15 | — | - |
| Career · 1 season | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 4.1 | 3 | 2 | 4 | 2 | 4.15 | — | 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.
Frequently Asked Questions about John Klein
- Was John Klein a pitcher?
- Yes. John Klein pitched in the major leagues, recording 0 wins and 2 strikeouts.
- What was John Klein's career ERA?
- John Klein finished with a 4.15 career ERA, going 0-1 with 2 strikeouts.
- How many strikeouts did John Klein have?
- John Klein recorded 2 career strikeouts.
- Is John Klein in the Hall of Fame?
- No. John Klein has not been inducted into the National Baseball Hall of Fame.
- What teams did John Klein play for?
- John Klein played for the Minnesota Twins.