Aaron Boone: Yankees' closer 'could be anyone' heading into Tuesday's Mariners matchupAroldis Chapman's struggles could see him out of closer role7/7/2021, 12:42 AMAlex SmithEditorial ProducerJun 30, 2021; Bronx, New York, USA; New York Yankees manager Aaron Boone (left) takes relief pitcher Aroldis Chapman (right) out of the game against the Los Angeles Angels during the ninth inning at Yankee Stadium. / Brad Penner-USA TODAY Sports