There was plenty of frustration in the visiting locker room after the Capitals suffered a 4-3 loss to the New York Rangers Monday night at Madison Square Garden. But not a shred of panic. “It’s unfortunate,” Mike Green said after seeing the Capitals’ two games to none lead on the Rangers reduced to 2-1. “We wanted to be up three, but we have a lot of work to do and we knew we would.” Monday night’s loss marked the seventh time in Capitals playoff history that they lost a Game 3 after winning the first two games. But Capitals defenseman Steve Oleksy said anyone thinking the Caps would sweep the Rangers were overly optimistic. “We know what we’re capable of in this locker room,” he said. “I think we’ve got to stick to that. Obviously, we’ve got to refocus and brush this one off. I mean, you’re not going to sweep every team through the playoffs.” After the two teams combined for just five goals in the first two games, the floodgates opened in Game 3, with the Rangers grabbing three one-goal leads, only to see the Caps answer back with goals from Green and Jay Beagle. But it was early penalties that did in the Caps as penalties to Joel Ward [high sticking] and Braden Holtby [tripping] directly led to goals by Brian Boyle and Derick Brassard.