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Angels Lose Kochanowicz, Moncada to Surgery, Roster Overhaul

6/10/2026

45 4 Full Breakdown

Summary

Kochanowicz Surgery

Jack Kochanowicz (Los Angeles Angels) will have Tommy John surgery after an MRI revealed a torn ulnar collateral ligament, posted a 6.19 ERA and a 97-mph fastball in 13 starts, and will miss the season through 2027.
Yoán Moncada will undergo surgery after signing a $4 million deal and being placed on the 60-day injured list on Monday.
Kurt Suzuki said the Angels are weighing options, naming Sam Aldegheri, Caden Dana and George Klassen.

Summary

Angels Rotation Update

The Angels' rotation now features Jose Soriano, Reid Detmers, Walbert Ureña and Grayson Rodriguez, leaving a vacancy after Tommy Kochanowicz’s exit.
Caden Dana, on the 40-man roster with a 1.117 WHIP and over a strikeout per inning, is the top call-up candidate.
Tommy John recovery for Tommy Kochanowicz usually exceeds a year, making a mid-2027 return possible while he still earns 2026 salary and service time.

History

Historical Context

1974 Dodgers physician Dr. Frank Jobe performed the first ulnar collateral ligament reconstruction on pitcher Tommy John, allowing him to pitch 14 more seasons. The operation has become routine, with roughly one-third of MLB pitchers having undergone it. Today the Los Angeles Angels confront a similar situation as rookie Jack Kochanowicz, whose early 6.19 ERA mirrors John’s pre-surgery form.

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Kochanowicz Surgery

Jack Kochanowicz (Los Angeles Angels) will have Tommy John surgery after an MRI revealed a torn ulnar collateral ligament, posted a 6.19 ERA and a 97-mph fastball in 13 starts, and will miss the season through 2027.
Yoán Moncada will undergo surgery after signing a $4 million deal and being placed on the 60-day injured list on Monday.
Kurt Suzuki said the Angels are weighing options, naming Sam Aldegheri, Caden Dana and George Klassen.

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