Reigning National League MVP Giancarlo Stanton is already a persona non grata in the Bronx as Yankees fans reacted to the slugger’s five-strikeout day against the Rays with a chorus of boos.

Stanton, a four-time All-Star who led the league in homers and R.B.I. last season, was New York’s high-profile signing of the offseason. But in true Yankees fashion, the new arrival took less than one home game for the fans to turn on him like the listless, ungrateful jackals they are.