NL East source on why Marcus Stroman should be better with Mets in 2020Stroman and Steven Matz will likely be bigger keys than whoever the team brings in to round out the rotation12/6/2019, 5:00 PMAug 9, 2019; New York City, NY, USA; New York Mets pitcher Marcus Stroman (7) at Citi Field. Mandatory Credit: Wendell Cruz-USA TODAY Sports / Wendell Cruz