The Mets lost another piece of their pitching depth for the rest of the season.

Right-handed starter Robert Stock will undergo surgery to repair a torn hamstring, a source tells Inside the Mets, which will officially end his 2021 campaign.

Stock was acquired by the Mets off waivers in June, and made two starts for the big-league club.

Unfortunately, Stock's time with the Mets came to a screeching halt when he exited his last outing on July 20 after just one inning of work, due to a hamstring injury suffered while running to first on a ground ball.

The Mets' pitching staff has been ravaged by injuries as of late, and Stock was the latest arm to go down this week.

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