Martinez (back) got a couple at-bats in a minor-league game Thursday and he expects to return to big-league action Friday, Jen McCaffrey of The Athletic reports.

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Red Sox DH Martinez sits with tight back

Red Sox designated hitter J.D. Martinez missed Wednesday's game and will sit for at least a couple of days with a tight back, manager Alex Cora said.

All access: J.D. Martinez's offseason workout

Boston Red Sox outfielder J.D. Martinez shows off how he's preparing for the upcoming season.

Buster's Buzz: Even without Arenado, the next free-agent class will be loaded

It appears there will be even more free agents next fall than there were this winter. And the upper echelon of stars is strong.

Buster's Buzz: Red Sox repeat? Four question marks facing the champs

From health to hangovers, Boston still must find a few answers in its quest for a second straight ring.

Buster's Buzz: With demand down, Boston might be Kimbrel's best bet

In the same way the Red Sox held out for J.D. Martinez in a crowded market, they could do the same for their free-agent closer.

Players vote Granderson Man of Year for 3rd time

Outfielder Curtis Granderson was voted Marvin Miller Man of the Year for the third time as part of the players' association's Players Choice Awards. Boston's J.D. Martinez was voted Player of the Year, with Mookie Betts and Christian Yelich also honored.

Mookie Betts' mammoth year may have bounced J.D. Martinez from AL MVP race

As the three top candidates for baseball's biggest hardware have been announced, it appears that Mookie Betts' performance may have affected his Red Sox teammate's case.

Moonlight Muncy: Game 3 longest in history

Max Muncy was the hero, leading off the bottom of the 18th and smacking a home run to get the Dodgers a 3-2 victory over the Red Sox that possibly saved their season. It was the longest game in World Series history.

Yelich, Red Sox's Martinez win Hank Aaron Award

Milwaukee's Christian Yelich and Boston's J.D. Martinez were honored as the 2018 winners of the Hank Aaron Award on Friday. The award is given to the best hitter in each league.

Red Sox start Martinez in LF, Benintendi on bench

The Boston Red Sox will start J.D. Martinez in left field and move Andrew Benintendi to the bench as the World Series shifts to Dodger Stadium for Game 3 on Friday night.