The Washington Post has a profile on former Pirate Capps, who just signed on as the Nationals prospective closer on a 1-year, $3.5 million contract. Given the state of the Nationals coming into spring training — they are arguably the worst team in all professional U.S. sports — signing Capps can only be a good thing. Despite a rough 2009, in which he posted a 5.80 ERA, some 16 teams expressed interest in signing the…