John Klein

John Klein: live stats, Statcast data and splits for the Toronto Blue Jays right-handed pitcher.

John Klein's 2026 season

John Klein pitched in 4 games out of the bullpen for the Twins and Blue Jays in 2026, the season he made his MLB debut on May 2. The right-hander worked 8⅓ innings with a 2.16 ERA and a 1.32 WHIP, striking out 7 (20.0 percent of batters) and walking 6 (17.1 percent). He was worth -0.1 fWAR.

Before his call-up, he posted a 5.91 ERA over 64 innings at Triple-A St. Paul.

PODCAST: Why trading Logan Gilbert should be on the table, blockbuster prospect trades, Ryan Sloan’s trade value

Baseball Things podcast: why the Seattle Mariners should consider trading Logan Gilbert, blockbuster prospect deals and Ryan Sloan’s value.

PODCAST: 3B Prospects, how the D improves, every arbitration decision

Baseball Things podcast: the Seattle Mariners' third base prospects, how the defense gets better, and a call on every arbitration case.

The J.P. Crawford Paradox

J.P. Crawford has provided leadership and a steady presence on the club's roster, but time may have just run out on the former first-round pick.

PODCAST: 3 Mariners players that should be on the trade block

Baseball Things podcast: Jason A. Churchill names three Seattle Mariners players who should be on the trade block this offseason.

John Klein's 2026 season

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PODCAST: Why trading Logan Gilbert should be on the table, blockbuster prospect trades, Ryan Sloan’s trade value

PODCAST: 3B Prospects, how the D improves, every arbitration decision

The J.P. Crawford Paradox

PODCAST: 3 Mariners players that should be on the trade block