Here's why the Yankees could explore the use of openers in 2019Acquisition of Adam Ottavino stacks New York's bullpen1/18/2019, 3:41 AMApr 24, 2018; Bronx, NY, USA; New York Yankees manager Aaron Boone (17) takes the ball from New York Yankees relief pitcher Dellin Betances (68) in the seventh inning against the Minnesota Twins at Yankee Stadium. Mandatory Credit: Noah K. Murray-USA TODAY Sports / Noah K. Murray