Periodic hustle is not enough to keep one on the basketball court. Not when Byron Scott is in charge.The Lakers head coach loved what he saw from his team when it shocked the basketball world with a 112-95 rout of the high-flying Golden State Warriors on March 6 at Staples Center.The Lakers (14-53) have gone 1-2 since then. They played lousy in the first half against Orlando before righting the ship and winning 107-98. The Lakers then lost 120-108 to East-leading Cleveland. No shame in that.But their 90-87 loss Sunday to the New York Knicks (28-40) did not sit well with Scott. It wasn’t the loss so much as it was the lack of energy by the starting unit. Newsroom GuidelinesNews TipsContact UsReport an Error That’s why young guns D’Angelo Russell, Julius Randle and Jordan Clarkson — the future of the team — sat and watched the second unit nearly pull out the victory. None played in the fourth quarter.“Absolutely, absolutely,” Scott said Monday at practice, when asked if he’d do that again. “Like I’ve said, I’m going to play guys that are going to play hard when they’re out there for as long as they’re out there. And if they’re playing well, I’m going to keep them out there.”Scott was queried as to whether he’s puzzled by the up-and-down energy.“It’s pissing me off,” said Scott, whose team hosts Sacramento (25-40) on Tuesday night at Staples Center. “It just irks me when you see that type of effort against a great team, but then you see the lackadaisical effort against some of the teams that we’ve played lately.“So again, you look at these guys and you just say they’re just young and they’re still learning and they’re still immature as far as what it takes to be successful in this league, and you just hope it starts to click in sooner or later. And that they’re starting to understand that they’ve gotta bring that same mentality every single night.” Scott admitted his team has gone in reverse since the win over the Warriors.“Yeah, the one thing we talked about after the Golden State game was not taking steps back,” he said. “But we’ve taken a step back since then, especially as far as effort is concerned. That’s the one thing I told them today is the fact that the 48 minutes against Golden State, we were really in tune to what we wanted to do. The effort was unbelievable.“But we haven’t had that same intensity and same effort since then.”No beef from D’AngeloRussell also held court with reporters. It didn’t take long before he was asked what he took from being on the bench during crunch time.“It’s just part of other people stepping up and that’s what they did,” he said. “So can’t really complain about it. … I would say the first half kind of bit us back in the butt because we came out sluggish and they (the Knicks) came out ready to play.”Russell shot 1 of 7 from the field Sunday and scored just four points with two assists in 22 minutes. He didn’t think he played that poorly.“I wouldn’t necessarily say I struggled last night,” he said. “I tried to find other ways to dominate the game besides scoring the ball, which I’ve been doing. But there are other ways to dominate the game.”Kudos for HuertasGuard Marcelo Huertas, a 32-year-old rookie out of Brazil, was on the court in the fourth quarter. He scored nine points and doled out two assists while grabbing four rebounds. Guard Lou Williams, who played for the first time after missing five games with a hamstring injury, liked what he saw from Huertas and the rest of the second unit.“It’s just that we play together,” said Williams, who scored 15 points off the bench. “I think Marcelo does a great job of keeping everything organized. For whatever reason, we’re just a selfless group. We don’t really care who gets the credit.”Russell also praised Huertas.“He knows the game,” Russell said. “People look at him and, I don’t know, you probably would say he doesn’t fit the eye test. But the guy knows his game. He knows basketball. He makes the right play 90 percent of the time.”This and thatScott couldn’t say whether Kobe Bryant will play Tuesday. … Reserve forward Brandon Bass did not practice Monday because of a corneal abrasion.