Clint Frazier (vision issues) began taking live at-bats Wednesday in Tampa, in addition to running and doing defensive work.

Yankees manager Aaron Boone said the outfielder “felt good” and was close to being physically ready for a rehab assignment, but was unsure when it would begin.

RHP Luis Severino’s next rehab start will be Sunday at High-A Hudson Valley. … RHP Corey Kluber (shoulder strain) was scheduled to throw a bullpen Thursday before facing live batters for the second time Saturday.

3B/OF Miguel Andujar (wrist strain) is not close to starting a rehab assignment, Boone said, as he just started swinging off a tee. … OF Trey Amburgey (hamstring strain) and 1B Chris Gittens (ankle sprain), who took early batting practice and did defensive work, will begin rehab assignments “imminently,” per Boone.

RHP Clarke Schmidt (elbow strain) had his rehab assignment transferred to Double-A Somerset, where he made his third start Thursday. He threw 50 pitches over 2 ²/₃ innings, giving up a run on two hits and a walk with four strikeouts.

Reliever Wandy Peralta will start Friday’s bullpen game, which was originally scheduled to be started by Jordan Montgomery (COVID-19).

Peralta took Allen’s spot on the 26-man roster Thursday after being activated off the COVID-19 injured list.