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.