Storen, 28, was having a terrific season until the Nationals acquired Papelbon in a trade with the Phillies on July 28. To that point, Storen was 29-for-31 in save situations with a 1.73 ERA and a 44/9 K/BB ratio in 36 1/3 innings. Following the trade, which bumped him into the set-up role, Storen posted a 6.75 ERA with a 23/7 K/BB ratio over 18 2/3 innings. The right-hander broke the thumb on his pitching hand after allowing a game-winning home run to then-Mets outfielder Yoenis Cespedes on September 9. The injury ended his season.
Storen is entering his fourth and final year of arbitration eligibility after earning $5.7 million in 2015. He can become a free agent after the 2016 season.