SCOTTSDALE, Ariz. – Evan Longoria is the most important player in Tampa Bay Rays history. Andrew McCutchen ushered in a baseball renaissance in Pittsburgh. Both are wearing Giants uniforms this spring.



But for all the stars in the Giants’ crowded constellation, there is little doubt who continues to point true north.



Buster Posey is their Polaris.



When the Giants captured their franchise-altering first World Series title in 2010, Posey was the NL Rookie of the Year. When they marched to a second championship run in 2012, he was the NL MVP. When they did it again behind Madison Bumgarner in 2014, yet another major league season concluded with a Buster Hug.



He is among the game’s most recognizable and marketable faces, even if it’s hidden most of the time behind a catcher’s facemask. And while he mostly keeps his opinions to himself, he certainly has them.



A catcher never stops thinking about the game.



He...