Janssen signed a one-year contract with the Nationals on Wednesday that includes a mutual option for 2016, Ken Rosenthal of Fox Sports reports. Although the veteran racked up 81 saves for the Blue Jays over the last three seasons, his average fastball velocity was below 90 for the first time in his career in 2014, leading to an increased ERA and WHIP with a lower strikeout rate. He could work his way into ninth inning duty in Washington if Drew Storen struggles, but most likely Janssen heads into spring training as part of the Nationals' set-up crew.