NEW YORK — Former St. Louis Cardinals ace Adam Wainwright will now be pitching in on MLB Network. The recently retired right-hander will serve as an on-air analyst for the network and is set to make his debut on March 28 as part of the opening day coverage, MLB announced Tuesday. Wainwright, 42, previously signed with Fox/FS1 to call games as a color commentator this season. He had joined that network’s postseason broadcasts after the 2020, 2021 and 2023 seasons. “I’m excited about this year ahead, and to stay in the game a little bit is exciting for me, to stay in it in that capacity,” Wainwr…