Get to know Walker Lockett, who makes Mets debut Thursday in place of Noah Syndergaard'Sometimes guys like this can fly under the radar'6/19/2019, 5:45 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