In yet another bit of unwelcome injury news for the Yankees, manager Aaron Boone told reporters Wednesday that Giancarlo Stanton sustained a calf injury while working in the outfield yesterday (Twitter link via Joel Sherman of the New York Post). Stanton has already undergone an MRI, which revealed a Grade 1 strain in his ailing right calf. Boone suggested that Stanton will “be down for a bit” and implied that the slugger could miss time early in the season.