Newly acquired Washington Nationals pitcher Rafael Soriano pauses during an introductory news conference at Nationals Park, Thursday, Jan. 17, 2013, in Washington. (AP Photo/ Evan Vucci)

Photo by: Evan Vucci

Newly acquired Washington Nationals pitcher Rafael Soriano pauses during an introductory news conference at Nationals Park, Thursday, Jan. 17, 2013, in Washington. (AP Photo/ Evan Vucci)