Another elite reliever jumped off the board yesterday, when the Colorado Rockies snatched up Wade Davis and locked him into a three-year, $52 million contract, according to multiple reports.

The Red Sox are still on the sidelines. And the pool of available relievers is getting thin.

The top relief arms remaining are Scott Boras clients Greg Holland and Tony Watson. Addison Reed, who closed for the New York Mets before impressing out of a set-up role with the Red Sox following a July trade, is also available.

Beyond those three, the list rapidly disintegrates. Matt Belisle, Bud Norris, Matt Albers and a soon-to-be-43-year-old Koji Uehara are among the best of the rest.

The Red Sox have just one lefty, Robby Scott, returning to the bullpen. The most reliable lefties available in free agency are Watson, Brian Duensing, Francisco Liriano and Boone Logan.

But it’s as clear as day that the Red Sox have other priorities right now. And it’s hard for them to commit resources to a top-notch reliever when they don’t know if they’ll land J.D. Martinez.

If Martinez goes elsewhere, the Sox should have an influx of unexpected spending power, and perhaps then they’ll be willing to address the bullpen.

Of course, by then it may be too late.

On the surface, it may seem like the last part of the roster they need to address. The Red Sox bullpen finished with a 3.07 ERA in 2017, second in the majors, while posting a 29-15 record. They have one of the game’s best closers in Craig Kimbrel (who might be looking down at Davis’ contract come next offseason, when he can test the free agent waters) and a slew of potential set-up guys in Carson Smith, Joe Kelly, Matt Barnes and Tyler Thornburg.

Judging by the way Red Sox president of baseball operations Dave Dombrowski has gone about his bullpen-building, it’s a safe bet he won’t be chasing down any of the few remaining studs on the free agent market.

But there’s plenty of risk in that strategy, and the riskiest bet of all is trying to guess what, if anything, the Red Sox will be able to get out of Thornburg, who they infamously acquired last winter in exchange for power-hitting third baseman Travis Shaw and three prospects.

Because of shoulder problems, Thornburg has yet to throw a pitch with the Red Sox. He labored all of spring training before finally undergoing surgery in June to treat thoracic outlet syndrome. The diagnosis was considered a “relief” by Dombrowski, who was thrilled to have identified the problem.

But as recently as the winter meetings, Dombrowski said the team remained unsure if Thornburg would be willing to contribute at a high level in 2018.

“The real wild card is Tyler Thornburg,” Dombrowski said.

With a slew of right-handed relievers, such as the ones previously mentioned along with Heath Hembree, Brandon Workman, Ben Taylor and Austin Maddox, the Sox could look to trade one of their extras, Dombrowski said. But would that be too risky with Thornburg’s status uncertain?

“If I knew Thornburg was . . . well, everything sounds encouraging,” Dombrowski said. “It sounds good. But until he really (starts throwing), do I know for sure? If we knew he was back (in time for the season), I would say for sure we have enough depth.”

Somehow, the Sox will need to add another lefty.

Other than Kimbrel, only Smith and Scott have a history of success against left-handed hitters. Kelly did well against lefties in 2017, holding them to a .671 OPS, but they’ve hit him well in the past.

Adding one lefty could’ve been the obvious and simple strategy to the bullpen this time around. But the New York Yankees had to go and make things complicated when they acquired Giancarlo Stanton. Between Stanton and Aaron Judge, the Yanks now have two of the best lefty-mashers in baseball.

The Red Sox already have four left-handed starters and could benefit from another strong right-on-right reliever in the ‘pen.

And remember, new manager Alex Cora said he’d like to use Kimbrel in a more versatile role this year, with an eye on getting him into the game in the seventh or eighth inning if the high-leverage moments make the move appropriate. Having a back-up closer behind him becomes even more crucial.

It all comes down to resources. And while teams like the Rockies are prioritizing the ’pen, it seems like an afterthought to those on Yawkey Way.