Dustin Pedroia -- one of the most legendary Boston Red Sox players ever -- has officially called it a career ... the 37-year-old announced Monday he's retiring.
Pedroia was a STAR for the Sox for over a decade ... he won AL Rookie of the Year honors in 2007 and went on to win the league's MVP award just one year later.
The 2nd basemen -- whose final years with the Sox were marred by various injuries -- also helped Boston win two World Series titles.
He ultimately ended his 14-year MLB career with a .