The Rangers are all wearing t-shirts with the message “Stay Positive” across their chests, and for the most part that’s what they were following last night’s 3-1 defeat to the Capitals in Game 1 of the first-round series. There was much talk about having done “a lot of good things,” and that wasn’t entirely off-base regarding the match in which the Blueshirts outshot their opponents 36-30 and out-attempted them by 79-53. But the Rangers didn’t do enough things well for enough of the time. They found themselves in more of an OK-Corral shootout than they would have preferred. And the heart of the matter is they didn’t get quite good enough goaltending from Henrik Lundqvist, who yielded a mighty spotty third goal to put his team in the final two-goal hole and was outdone by Braden Holtby. “It was a really bad goal,” Lundqvist said of the Jason Chimera long, bad-angle drive from the left boards that sneaked through and gave Washington a 3-1 lead at 15:07 of the second, just 46 seconds after Marcus Johansson had buried a breakaway. “I’m very disappointed; I thought I had my pad there. “It can’t happen, but it did.”