The Colorado Rockies signed Boone Logan to a three-year, $16.5 million dollar deal back in 2014 to be a set-up, lefty specialist in the back end of the bullpen. With Logan set to become a free agent, barring the club re-signing the veteran, Colorado will be on the hunt for a left-hander in late-game situations.
Enter Mike Dunn — Dunn has spent the last six years with the Miami Marlins. The 31-year-old southpaw is coming off a 6-1 season out of the pen, yielding 16 runs on 43 hits over 42.1 innings pitched. Dunn finished with a FIP of 3.