The way it stands, Jeurys Familia, AJ Ramos, Jerry Blevins, and Anthony Swarzak are being considered the only locks to be in Mickey Callaway's Opening Day bullpen.
It appeared Matt Purke once had the inside track to be Callaway's second left-handed reliever. However, he was recently eliminated from the competition after being dismissed to minor-league camp with fellow pitchers Drew Smith, P.J. Conlon, and Corey Taylor.
This means that Paul Sewald, Seth Lugo, Robert Gsellman, Hansel Robles, and Jacob Rhame are left competing to be the final three or four relievers added to the roster.