Washington Nationals by KearnsT

To make up for questions 17 and 18, the Nationals took action to acquire a proven disaster for their bullpen. The Nationals traded Nick Pivetta to the Philadelphia Phillies to acquire this combustible liability in 2015. It went about as well as expected.

Name this right-handed reliever who was famously nicknamed "the DC Strangler" by Jayson Werth in a 2016 postgame interview shortly before the reliever was released.