The Diamondbacks have pursued late-inning help all offseason. Arizonas lone major league bullpen pickup was their waiver claim of from Houston. The Snakes let walk in free agency, leaving them without much in the way of experienced closers. General manager Mike Hazen told reporters this afternoon that any late-offseason bullpen pickup is likelier to come by way of free agency than trade ( by Alex Weiner of Arizona Sports). The bullpen market has moved rapidly over the past four or five weeks. stands as the top unsigned reliever. He has ample experience as both a closer and setup man. Robertson will be limited to Ralph Garr Jersey a one-year deal at age 40, though he could command an eight-figure guarantee after posting an even 3.00 earned run average while striking out a third of opponents acro s 72 innings for the Rangers. There are a handful of other free agent relievers who still seem likely to land big league deals. , , and should all get major league contracts. , , and injury returnees and are all unsigned. has the most closing experience of any free agent, though hes coming off a dismal season with the Orioles. If the Diamondbacks dont add anyone from that group, the ninth inning could be up for grabs in camp. Manager Torey Lovullo said yesterday that hed prefer having an established closer but is not going to force it if a committee approach works better ( ). Lovullo listed , and as in-house candidates to close. Puk was utterly dominant after the D-Backs acquired him from the Marlins at last summers deadline. The southpaw fired 27 1/3 innings of 1.32 ERA ball while striking out nearly 42% of batters faced. Puk has had three straight seasons as an excellent late-game weapon. He didnt close much last year but recorded 15 saves two seasons ago. Martinez turned in a 2.48 ERA over 72 2/3 innings in his first full big league campaign. The righty punched out nearly 30% of batters faced with a ma sive 58.9% grounder percentage. His sinker landed north of 100 MPH on average, while opposing hitters had no succe s against his splitter. Martinez doesnt have Puks multi-year track record but clearly has closing stuff. Ginkel turned in a 3.21 ERA with a strong 26.5% strikeout rate acro s 70 innings. While he seems likelier to stick in a setup capacity, the righty has been a reliable bullpen piece for the past three years. Guillermo Heredia Jersey