The 31-year-old Marmol spent 2013 with the Chicago Cubs and Los Angeles Dodgers. He went 2-4 with a 4.41 ERA with 2 saves, both coming in Chicago, in 52 games in the Major Leagues. Marmol had a ridiculously high BB/9 rate in 2013, posting a 7.3 mark. Over his career, the Dominican has struggled with his command mightily, posting a 6.1 BB/9. Usually, Marmol has been able to survive his wildness with strikeouts, but in 2013, his K/9 rate was "only" 10.8, nearly a whole strikeout below his career 11.7 K/9 mark.
Marmol averaged 12.9 strikeouts per nine and "only" 5.6 walks per nine per year during his short peak, which lasted from the 2007 to the 2010 seasons. He posted a 2.54 ERA in 297 games during that time. Since, Marmol has averaged 11.6 strikeouts per nine and 6.7 walks per nine, resulting in a 3.94 ERA. The Marlins may just be getting "damaged goods," but if Marmol can regain his control, this could pan out to be a very good deal.