Chris Flexen, the former Mets draft pick who spent the 2020 season in Korea, will return to the major leagues on a two-year, $4.75-million deal with the Mariners, The Post has learned. Michael Mayer of Metsmerized first reported that Flexen would sign with the Mariners. The 26-year-old, selected by the Mets in the 14th round...
