SCOTTSDALE, Ariz. -- As Giants veterans checked into camp last week, a couple of them referred to the 25-man roster in interviews. Like writing a new year on your checks, it'll take a while for players to adjust to having a 26th man.

But on the second floor of the new facility at Scottsdale Stadium, there already have been plenty of conversations about it.

The front office has an extra roster spot to work with, and few executives will dig that more than Farhan Zaidi, who spent 2019 in an endless roster shuffle as he added depth and talent to the 40-man roster. Zaidi, general manager Scott Harris and manager Gabe Kapler have talked this spring of all the different ways they can go.

As the Giants go through their spring rotation for the first time, it's far too early to project a full roster, especially in a camp where so many jobs are up for grabs. But we can take a look at how that roster will be impacted by the extra spot. The Giants will have 13 pitchers, that much we know. But what will they do with that 13th position player?

Pablo Sandoval

Just about seven months removed from Tommy John surgery, Sandoval already is taking part in nearly every drill, with some restrictions on his throwing. But he's a month ahead of schedule in that department, and he hasn't ruled out Opening Day.

The staff is looking more at a May return, but they'll leave the door open for Sandoval. There's some thought that given his age (33) and the fact that he's on the back end of his career, it might be easier to push Sandoval than a younger player. He's not a 24-year-old looking for that life-changing contract; he's someone who above all simply wants to play baseball.

Sandoval feels he's ready to pinch-hit now and he has looked sharp in early BP sessions. If, say, his throwing arm will be fully healed by mid-April, could the Giants put him on the Opening Day roster purely as a pinch-hitter and let him rehab his elbow before games? They've talked about it.

Speed/defense

This is the Billy Hamilton section. Hamilton no longer is the 50-stolen base threat he was in Cincinnati, but he still is one of the fastest players in the game and an elite defensive center fielder. He hasn't hit enough in recent years to be a regular starter, but the Giants still could find creative ways for him to impact a game.

Let's say Mike Yastrzemski starts in center and Hunter Pence in left and Pence leads off the sixth with a single. If you know he won't hit again until late in the game and your preference is to replace him defensively anyway, you can bring Hamilton in to pinch-run and play center, with Yastrzemski sliding to left. The Giants also have discussed making this type of move much earlier in a game to gain a slight edge.

They don't have a true center fielder and there's not much speed on the locked-in part of the roster. The 26th spot makes it a lot easier to carry a Hamilton or Steven Duggar.

A full infield

You start adding them up: Brandon Belt, Wilmer Flores, Mauricio Dubon, Brandon Crawford, Evan Longoria ... that's five infielders before you even get to Sandoval, Donovan Solano (who had a very solid 2019) or Yolmer Sanchez (who won a Gold Glove last year and chose San Francisco over other offers, indicating he was told he has a really good shot at making the roster).

The Giants could go with four in the outfield and use Dubon as their fifth, while keeping Solano and Sanchez on the Opening Day roster. This team may simply have to carry seven infielders at times, because that's where most of their core guys are.

Third catcher

The Giants don't have the depth to do this but you can bet some other clubs will. Long term, though, this will be an appealing option. Zaidi has talked a lot over the past year about versatile catchers and it would be a nice boost if they could find a lefty to pair with Buster Posey and Joey Bart next year, ideally someone with options. That would allow Kapler to freely use both Posey and Bart in every game.

Stephen Vogt, who played some left field, is in Arizona now, but someone like that would make sense in future years. The best bet would be developing a lefty-swinging catcher who could be optioned back and forth as a third guy.

[RELATED: Watch Bart, Dubon homer in Giants' spring training opener]

Inventory

This isn't about any particular player, but adding a 26th player makes it a bit easier at the end of the spring to stash a veteran who is out of options. There are a lot of waiver claims during that final week before Opening Day rosters are set, but teams generally slow down once the season officially starts. No executive likes to lose a player who is out of options.

The Giants could stash someone on Opening Day, and then DFA him later and try to sneak him through waivers and onto the Triple-A roster.