The Phillies responded to the Mets’ ninth-inning magic with a Nick Castellanos walk-off.
PHILADELPHIA — A nearly improbable Mets win turned into a gut punch Sunday night. Short of a miracle, the Mets couldn’t escape the bottom of the ninth after Mark Vientos’ second homer of the game a half-inning earlier. But Tyler McGill surrendered a walk-off RBI single to Nick Castellanos in the bottom of the inning…