Walker Lockett makes his Mets debut against Chicago, Thursday at 8:05 p.m. on SNYThe Mets will take the field just hours after making changes to the coaching staff6/20/2019, 11:22 PMFeb 23, 2019; Port St. Lucie, FL, USA; New York Mets relief pitcher Walker Lockett (61) delivers a pitch in the first inning against the Atlanta Braves at First Data Field. Mandatory Credit: Jasen Vinlove-USA TODAY Sports / Jasen Vinlove