A swing flaw ruined the Red Sox' J.D. Martinez in 2020. Here's how

J.D. Martinez Is Always One Step Ahead

J.D. Martinez, Boston Red Sox DH: 'Chip on my shoulder' is back entering 2021; 'I wasn't really prepared for last year'

Red Sox: J.D. Martinez shows signs of breaking out of spring slump

A swing flaw ruined the Red Sox' J.D. Martinez in 2020. Here's how he sought to correct it

J.D. Martinez Gives Fascinating Insight On How He's Fixing His Swing

Boston Red Sox 2021 Preview: What to expect out of J.D. Martinez - Over the Monster

jd martinez – Blogging the Red Sox

Why JD Martinez Changed His Swing

Boston Red Sox plan to have J.D. Martinez see significant time in right field: 'We put him in a spot and he makes the plays'

J.D. Martinez locked and loaded as Red Sox DH - The Boston Globe

Dodgers notes: JD Martinez, Justin Turner, Miguel Vargas, Seth Lugo - True Blue LA

J.D. Martinez may opt to stick with Red Sox

JD Martinez Swing Analysis: Fix Dropping Back Shoulder Tilt & Swinging Under Baseball or Softball?

Boston Red Sox Spring Training: Trying to understand the state of the backup catcher battle - Over the Monster

J.D. Martinez on his hitting mentality

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