"Stock, 36, has appeared in parts of five MLB seasons to this point in his career. A second-round pick by the Cardinals back in 2009, he made a strong impression with the Padres in 2018, his first season as a big leaguer. He posted a 2.50 ERA in 39 2/3 innings of work that year, but unfortunately he's struggled at the big league level since then."
"That led Stock to sign a minor league deal with the Mets headed into 2026, and he figured to be a versatile depth option for the club's pitching staff headed into the year. He's pitched well so far this spring, including a strong three-inning appearance against the Marlins while preparing to pitch for Team Israel in the World Baseball Classic. Unfortunately, that outing ended with him reporting discomfort in his shoulder."
"The specific kind of TOS Stock is suffering from is arterial TOS, the rarest form of the disorder. While baseball fans have become increasingly familiar with TOS in recent years, they're likely to be more familiar with neurogenic TOS (the form of the disor"
Robert Stock, a 36-year-old right-hander with the Mets, has been recommended for surgery to treat thoracic outlet syndrome (TOS), specifically the arterial form, which is the rarest type of the disorder. Stock discovered the condition after experiencing shoulder discomfort during a spring training appearance against the Marlins while preparing for the World Baseball Classic with Team Israel. An MRI confirmed the diagnosis. Stock joined the Mets on a non-roster invite and was expected to serve as a versatile depth option for the pitching staff. Despite a strong performance at Triple-A Worcester in 2025 with a 3.92 ERA, Stock faces an extended absence due to the required surgery, though he indicated potential availability before the season concludes.
Read at MLB Trade Rumors
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