SAN DIEGO — The Mets aren’t done upgrading the bullpen just yet.

Ryan Helsley, the fireballing two-time All-Star closer and longest-tenured member of the St. Louis Cardinals, recently estimated his chances of being traded away at “90 percent.” He was proven correct on Wednesday when he was traded to the New York Mets.

It was a big day for the St. Louis Cardinals organization on Wednesday. The Cardinals swung two separate trades. St. Louis traded Ryan Helsley to the New York M