What happened to J.D. Martinez? Why he's constantly tinkering to become the player he used to be - The Boston Globe

J.D. Martinez and other big hitters pulling for the return of opposite-field success - The Boston Globe

How the Houston Astros Revolutionized Player Development - The Ringer

J.D. Martinez has gotten back into the swing with Dodgers - The Boston Globe

Back at the All-Star Game, Red Sox slugger J.D. Martinez says he's fulfilling his contract to the end - The Boston Globe

World Series 2018: How the Red Sox built their AL champion roster through trades, free agency and the draft

J.D. Martinez has been out of sorts at the plate, but three-hit night could put him on right track - The Boston Globe

Dodger Details: Trade deadline work to do, shuffling arms and more - The Athletic