SFGRTB
Superstitious Fan
Feel bad for Storen. Guy was pitching great for the Nationals and they demote him for Papelbon (not that Papelbon was any average pitcher). It seemed to have messed with his head a bit. Hasn't been the same since then.
Yeah, and this isn't the first time. He was replaced by Tyler Clippard after his first year as the closer (I think he was injured coming into that season, so you can give them a break), but then when he was healthy and able to return to closer they brought in Rafael Soriano to close. After they traded both of them away and Storen is the closer again, they replace him with Paps.
They've just never seemed comfortable with him closing. Nothing wrong with stacking the bullpen, but you don't always need to chase closer to improve Pens (see, Giants).