Yankees' Aaron Boone 'very encouraged' by Jonathan Loaisiga after another positive rehab stepYankees hope the back-end bullpen arm can be back by the end of the regular season9/21/2021, 8:26 PMScott ThompsonEditorial ProducerNew York Yankees pitcher Jonathan Loaisiga (43) delivers a pitch during the first inning against the Philadelphia Phillies at Citizens Bank Park. / Gregory Fisher-USA TODAY Sports
