DALLAS -- Day One of the Winter Meetings is in the books, and here's what you need to know about what is going on with the D-backs:

The D-backs could be in the market for a closer, or not
D-backs general manager Mike Hazen feels good about the back of his bullpen with right-hander Justin Martinez and lefty A.J. Puk, not to mention setup guys Kevin Ginkel, Ryan Thompson and Joe Mantiply.

But Hazen also watched the pen struggle a bit down the stretch last year, possibly from being worn down. So he would like to give manager Torey Lovullo some additional options down there for games in which Arizona has the lead.

"Every year, we just play a lot of close, winning games, which is great, but that takes a toll on the bullpen," Hazen said.

So, Hazen was asked, would you be looking to acquire someone with closing experience?

"Yes," Hazen said. "Clearly Puk and J-Mart can do it. They have the talent to do it. They will get, I¡¯m guessing, save opportunities. I think adding somebody into that mix that can pitch behind them at times is something we¡¯re shooting for. I don¡¯t know if that¡¯s what¡¯s going to end up happening. We may end up going in a different direction depending on what we can actually do. I¡¯m going to try not to force feed that too much. There should be opportunity for us to at least see what that could bring."

They're not trading Zac Gallen or Merrill Kelly
Gallen has one more year of arbitration before becoming a free agent, while Kelly is in the final year of his contract extension and can be a free agent as well.

Sometimes teams will look to deal a player with just one year of control in order to pick up more controllable pieces for the future. The D-backs did that in December 2018 when they dealt Paul Goldschmidt, who was one year away from free agency, to the Cardinals for a pair of controllable players -- catcher Carson Kelly and right-hander Luke Weaver -- and a prospect.

Hazen did that in part because the D-backs' Minor League system at the time was not in great shape, and he wanted some players who were Major League ready.

They are in a different spot now.

"We¡¯re looking at 2025 as an important year for us," Hazen said. ¡°I¡¯m not looking to take away from the team. Trading away good players for value -- I get it, yeah. In some cases, maybe teams in our position need to constantly look at those things, and I respect that. It¡¯s definitely something that we understand. I¡¯m very interested in putting the best team out there in 2025 as possible."

The D-backs might rely on a different formula in 2025
In their run to the 2023 World Series, the D-backs relied on their pitching staff and used their speed to create chaos on the basepaths.

Last year, their pitching faltered -- partly due to injuries in the rotation, and partly due to underperformance -- and Arizona relied on its offense to win games, leading baseball in runs scored with 886.

The offense, though, has taken a hit, with first baseman Christian Walker and the designated hitter platoon of Joc Pederson and Randal Grichuk all hitting the free-agent market.

The D-backs in 2025 may revert to having to rely on their pitching to carry the load once again.

"That¡¯s a decent amount of slug in the middle of our lineup that¡¯s not under control right now," Hazen said. "I don¡¯t know if we¡¯re going to be able to fill all of that. It may look different. I think if we improve our run prevention by the margins that I¡¯m hoping we¡¯re going to improve our run prevention [by], we¡¯re not going to need to cover all those runs and still have a chance to win 90 games."