Here’s why Max Scherzer, David Peterson are the best pairings for Mets rookie catcher Francisco Alvarez'According to a source, Alvarez had the best overall framing metrics of any Mets catcher during spring training'4/12/2023, 3:19 AMAndy MartinoMLB InsiderMar 3, 2023; Port St. Lucie, Florida, USA; New York Mets catcher Francisco Alvarez (50) walks off the field against the Washington Nationals during the seventh inning at Clover Park / Rich Storry-USA TODAY Sports