Matt D’Agostini and Jamie Langenbrunner were in the Blues’ lineup Tuesday against Nashville, but these days neither are taking their appearances for granted. Because of the club’s depth at forward, D’Agostini was suiting up for only the third time this season and Langenbrunner for his fourth. Blues coach Ken Hitchcock “has talked with me, told me I’m going to get my chances,” D’Agostini said. “Just stay ready, and that’s what I’ve been (doing). Trying to look at the big picture here, we’ve got a team that can go far, so I just try to stay my normal upbeat self for the guys when I’m not in, and do what I can what I get the chance.” Against Detroit last Friday, D’Agostini made the most of his first game back after four nights as a healthy scratch, scoring the tying 2-2 goal in what ended a 5-3 loss to the Red Wings. D’Agostini said the goal was good “just for my own confidence. But like I said, I’m not trying to do too much, just go out there and do what I normally do.” Hitchcock said Tuesday that D’Agostini “didn’t have a good training camp, and he’s really picked up the pace. He’s pulled himself into the mix here. ...He’s giving us choices now, which is a really good sign. These are hard choices we are making, but nobody’s getting pushed out right now.” Langenbrunner dressed Tuesday for the third time in the team’s past four games. But that was after the veteran of 1,100 NHL games played only one of the first five. “It’s definitely different for me than anytime in my career,” Langenbrunner said. The two-time Stanley Cup champion said that he and D’Agostini have “obviously had some choice words for some people at times, but we kind of talked each other off the ledge a little bit. You’re definitely balancing those emotions.”