8Boston, MA - 5/15/2018 - (4th inning) Boston Red Sox right fielder J.D. Martinez (28) makes the catch of a short fly ball by Oakland Athletics right fielder Stephen Piscotty (25) during the fourth inning. The Boston Red Sox host the Oakland Athletics in the second of a three game series at Fenway Park. - (Barry Chin/Globe Staff), Section: Sports, Reporter: Peter Abraham, Topic: 16Red Sox-A's, LOID: 8.4.1930814980.
Barry Chin/Globe Staff

Discuss: What do the numbers really say about J.D. Martinez’s defense?

How evolving metrics paint a more complete picture of Martinez’s defensive ability.

For Red Sox outfielder/designated hitter J.D. Martinez, his free agency this offseason represented something a bit different. His trip to the open market also came with an unexpected degree of scrutiny, and criticism focused on Martinez’s defensive résumé. “I got to hear how terrible I am,” Martinez said. “I don’t get it. It blows my mind.”

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