Oakland A’s trade for Pitcher Jon LesterBrock PalmbosBrock PalmbosPublished: July 31, 2014Jim Rogash - Getty ImagesShare on FacebookShare on TwitterThe A's make another blockbuster trade for a big arm. WEEI in Boston's Alex Speier was first to report this story.Story Here: http://espn.go.com/boston/mlb/story/_/id/11290302/jon-lester-traded-oakland-athletics-yoenis-cespedes-boston-red-sox