Aaron Boone believes Cory Gearrin 'can be really good' for Yankees' pitchingThe Yankees claimed the RHP off waivers Friday8/24/2019, 3:21 PMAug 21, 2019; St. Petersburg, FL, USA; Seattle Mariners relief pitcher Cory Gearrin (35) throws a pitch during the first inning against the Tampa Bay Rays at Tropicana Field. Mandatory Credit: Kim Klement-USA TODAY Sports / Kim Klement