Aardsma had been in spring training with the New York Yankess, but did not make the 25-man roster. The team released Aardsma and the right-handed pitcher cleared waivers, giving him the opportunity to sign with the Marlins.
The relief pitcher underwent Tommy John Surgery in July of 2011, and has only made one major since his surgery. Aardsma did look healthy and hit 94 mph on the radar gun during spring training, so he should have a chance to earn a spot in the Miami bullpen.
Aardsma has been a high-strikeout pitcher for most of his career, but has also struggled with walks. The 31 year-old owns a 9.08 K/9 ratio, but also a 5.06 BB/9 ratio. Aardsma has also been used in the closer role in the past, saving 69 games for the Seattle Mariners during the 2009 and 2010 seasons.
Miami's bullpen has struggled to start the season, as the team owns a 6.07 ERA through 29.2 innings of work. Steve Cishek and Chad Qualls have both looked particularly shaky, as each pitcher currently sports an ERA over 10.