Dusty Baker has been to the postseason seven times in 21 years as a manager. He’s looking for his first championship in D.C., the fourth and likely final stop of his career.Baker’s behind-the-scenes work might be the biggest difference in a team that played down to an 83-79 record under Matt Williams last season.On the field, veteran second baseman Daniel Murphy – who carried the Mets past the Dodgers in last year’s National League Division Series – is an MVP candidate. Unheralded right-hander Tanner Roark has become a viable No. 2 starter. Mark Melancon was a necessary midseason upgrade over Jonathan Papelbon as the closer. The only person standing between speedy infielder Trea Turner and the NL Rookie of the Year award plays shortstop for the Dodgers.For all that’s gone right under Baker, the Nationals’ recent streak of bad luck arrives at a bad time. Harper is D.C.’s first superstar baseball player since the 1960s; the onus will fall on him in the eyes of many. But because they balance power and speed as well as any club, the Nationals can be creative. First base coach Davey Lopes, the former Dodger, teaches base stealing as well as anyone.HEALTH CHECKRamos and Strasburg are out. Werth is day-to-day. Harper seems determined to play through everything, and Murphy missed time last week with a strained left buttocks.WHO COULD BE THEIR X-FACTOR?The ageless Jayson Werth has been a stable lineup presence when healthy, hitting 21 home runs in 143 games. He has 53 games of postseason experience in a 14-year career, including two trips to the World Series with Philadelphia. If you believe that experience matters, Werth is the Nationals’ answer to Dodgers second baseman Chase Utley.NEWCOMERS TO WATCHTurner has been electrifying at the plate (.342/.367/.569), on the bases (32/38 SB) and in the field (he’s better at second base than in center).With Ramos out, keep an eye on rookie catcher Pedro Severino, who probably won’t start but has shown some pop in his bat. Second-year hurler Joe Ross, 23, is a candidate to start Game 4. He allowed three runs in three September starts.MAN AT THE WHEELThe postseason demands a different touch compared to the regular season, and Baker’s track record makes you wonder how well he grasps this nuance. Over 21 years, he’s won 53 percent of his regular-season games. In seven trips to the playoffs, he is 19-26.Baker has crossed paths with just about everyone in his lifetime. Here’s a fun fact: In 2006, he managed a Chicago Cubs team featuring Dodgers pitcher Rich Hill and special advisor Greg Maddux. Newsroom GuidelinesNews TipsContact UsReport an Error All-Star catcher Wilson Ramos (knee surgery) was ruled out for the year when he tore his ACL in September. The lineup will miss his .307 batting average; Washington’s pitching staff might miss Ramos more.Another All-Star, pitcher Stephen Strasburg (elbow), will miss at least the first round. Outfielder Jayson Werth recently battled a back injury, while slumping superstar Bryce Harper can’t escape questions about his right shoulder and left thumb. Batting .243, Harper has fallen off at the plate and in the field coming off an MVP season last year.Even if their roster isn’t as deep as it was a month ago, the Nationals have enough weapons to be dangerous in a short series. They ranked fourth in MLB with a .783 on-base plus slugging percentage (OPS) against left-handed pitchers, and the Dodgers likely will ask lefties to start four of the five games if the series goes the distance.HOW WILL THEY SCORE?One Dodgers pitcher called losing Ramos a “monumental” blow to the Nationals’ lineup; another called it “huge.” The bottom line: Murphy and Turner will need some help producing runs.