Stassi is working with Astros manager A.J. Hinch to improve his framing, receiving and stance behind the plate this spring, Evan Drellich of the Houston Chronicle reports.

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"If he makes our team, I want our pitching staff to be comfortable throwing to him," Hinch said of the 24-year-old. "We're going to put in a little bit of work to make sure that his mechanics behind the plate are where they should be, that his body positioning and his hand position are where they should be. He's hungry to get better." Stassi is the favorite to win the Astros' backup catcher job behind starter Jason Castro, but Alfredo Gonzalez, Roberto Pena and Tyler Heineman loom as other internal options for the role, albeit with considerably less experience.