Slugger J.D. Martinez staying with Boston Red Sox
Stephen Strasburg, J.D. Martinez, Aroldis Chapman opt out deadline
Martinez declines to opt out of contract, stays with Red Sox
J.D. Martinez Wary of Free Agency Ahead of Red Sox Contract Option, News, Scores, Highlights, Stats, and Rumors
J.D. Martinez, Boston Red Sox agree to $110 million, 5-year deal – The Denver Post
J.D. Martinez Is Always One Step Ahead
Slumping J.D. Martinez Might Bypass Contract's Opt-Out Clause Over Uncertain Free Agent Market
MLB Rumors: J.D. Martinez, Boston Red Sox deal done, per report - Lone Star Ball
The Red Sox Add a Slugger of Their Own, Signing J.D. Martinez - The New York Times
J.D. Martinez situation highlights Red Sox' muddied future at designated hitter – NBC Sports Boston
J.D. Martinez's opt-out decision may cause Boston Red Sox to get creative: 'All options have to be put on the table,' says assistant GM Eddie Romero
What does J.D. Martinez's opt-in mean for Red Sox and Mookie Betts? - ESPN
When J.D. Martinez heads 'back to the lab,' will he correct his swing flaws? - The Athletic
Red Sox, J.D. Martinez finalize $110M contract