Luis Severino had been scheduled to throw live batting practice Wednesday, but the Yankees said the right-hander woke up with a stiff back, so it was pushed back a day. It would have been Severino’s first live BP in his comeback from last year’s Tommy John surgery.

He may face top prospect Jasson Dominguez when he does throw at the team’s player development complex in Tampa. The 18-year-old Dominguez, in extended spring training after the organization opted not to place him with a team to start the minor league season, worked in center field Wednesday and had a single, double and stolen base.

Dominguez is expected to play in actual games at some point this summer, perhaps first in the Gulf Coast League, which starts June 28, before moving to Low-A Tampa, which began its season a week ago.

“[Dominguez’s] at-bats are very mature and physically he’s very mature,’’ said Mario Garza, the Yankees’ coordinator of baseball development, who is serving as the first base coach while Reggie Willits stays away from the team with COVID-19.

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