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The Twins recalled Klein from Triple-A St. Paul on Saturday, Aaron Gleeman of The Athletic reports.
Klein has made seven appearances (six starts) at St. Paul this season, posting a 7.48 ERA and 1.32 WHIP alongside a 24:6 K:BB through 21.2 innings. Although his numbers aren't exactly impressive, the Twins will call upon him to fill the open spot in their bullpen left by Cole Sands' (forearm) move to the injured list Saturday.
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Twins' John Klein: Moves to Triple-A
Rotowire
The Twins optioned Klein to Triple-A St. Paul on Monday.
Klein was one of nine players sent out of big-league camp in the Twins' latest round of roster cuts. Minnesota added the 23-year-old righty to the 40-man roster this offseason after he accrued a 3.98 ERA, 1.25 WHIP and 128:37 K:BB across 106.1 innings between St. Paul and Double-A Wichita in 2025. Klein made 15 of his 31 appearances out of the bullpen last season, but he's been building up as a starter during spring training and is expected to handle a full-time role in the St. Paul rotation in 2026.
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Twins' John Klein: Working as starter
Rotowire
Klein will be built up as a starter this spring, Matthew Leach of MLB.com reports.
Klein was used as a starter and reliever in the minors last season with a strong 10.8 K/9 which could make him a candidate for the major-league bullpen at some point. He had a good season at Double-A Wichita with a 3.12 ERA and 95:24 K:BB in 80.2 innings, but he struggled when called up to Triple-A with a 6.66 ERA and 33:13 K:BB in 25.2 innings.
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