The Marlins plan to activate veteran lefty Mike Dunn from the disabled list Tuesday or Wednesday, according to Barry Jackson of The Miami Herald.
Mattingly says Mike Dunn will be activated Tues or wed probably. Mattingly says hopes Stanton available to pinch hit tonight or Tues but TBD— Barry Jackson (@flasportsbuzz) May 30, 2016
Since Dunn was placed on the disabled list before the season started, the Marlins have tried several different left-handed relief options.
The Marlins gave Craig Breslow an opportunity, but he struggled and was ultimately designated for assignment. The day after designating Breslow, the club signed Joe Beimel to a minor league deal.
However, it appears there might have been an issue with his physical, and the deal ultimately fell apart.
Miami is not known for carrying a left-handed specialist and Dunn hasn't filled that void over the last few seasons. He should prove to help the back of the Marlins' bullpen, though, and can save games if A.J. Ramos is unavailable.
Over 54.0 innings last season, Dunn pitched to a 4.50 ERA and 3.89 FIP. He's pitched to a career 3.56 ERA but hasn't posted a WAR close to one since 2014 (0.9).
Miami's relievers have collectively pitched to the 15th-best bullpen ERA in baseball, and Dunn should help the Marlins improve that mark. The Marlins are sixth in the National League in bullpen ERA.