PHOENIX — Jed Hoyer and the Cubs spent the winter stockpiling depth across the diamond.

In the bullpen and the rotation, they added arm after arm this offseason and on the position side, the Cubs added options at positions they had openings at.

“I think that [you’re] trying to fortify the roster in any way possible,” Hoyer said when speaking about the team’s offseason approach at the Arizona Biltmore Hotel for MLB spring training media day. “I think that you’re always trying to think about what things can go wrong.”

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For most of the winter, the Cubs never had a clear backup option at first base.

Justin Turner solves that. The team added the 40-year-old veteran on a 1-year deal, a source confirmed to Marquee Sports Network and will serve primarily as a backup designated hitter and 1st base option for the Cubs.

If the Cubs are facing a tough left-handed pitcher or Michael Busch needs a day off, then Turner will play first.

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“We’re just shallow depth-wise there,” manager Craig Counsell said. “So, it’s a position of need. As you look around [the] depth charts, so to speak, at the major-league level, it’s probably the greatest area of need.”

Turner came up as a third baseman and has made 893 starts at the hot corner in his 16-year big-league career. The Cubs have an opening at third base, leading to speculation that Turner will serve as cover in case 2023 1st-round pick Matt Shaw isn’t ready to man the position.

But Turner — who had a .354 on-base percentage in 2024 with Seattle and Toronto — is being brought in as a bench bat option. He’ll provide cover to the Cubs in multiple ways, though. If a corner outfielder goes down and Seiya Suzuki is pressed into playing in the field, Turner could man the DH role for the Cubs.

Instead, Shaw and Jon Berti will be options to win the Opening Day third base job.

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Adding Turner helps create some interesting roster battles as spring training continues, though. The Cubs will have to create a spot on their 40-man roster and after that will have intriguing options to round out their four-man bench for Opening Day.

Turner, Berti and Carson Kelly were all signed to major-league deals and are without minor-league options. Outfielder Alexander Canario and infielder/outfielder Vidal Bruján also are on the 40-man roster and without minor-league options and Rule 5 Draft pick Gage Workman can’t be optioned to the minor leagues without being offered back to Detroit first.

Assuming health — and Shaw being the team’s third baseman — Turner, Berti and Kelly will all be on the Opening Day roster and Canario, Bruján and Workman will be battling out for the last spot.