Trevor Ariza said the work the Rockets have put in on defense during a training camp practices has been strong. "That's something we put an emphasis on," Ariza said Friday. "We work on that every day, we drill it every day (and) when you do something every day, it becomes a habit and that's what we're on our way to." The Rockets hired Jeff Bzdelik as the defensive coordinator in a sense to improve a group that struggled last season in that area. "I think every coach approaches things differently, there's no one right way," "Ariza said. "He's done a lot of research a lot of studying and what he studies worked and you can't argue with that. That's what we're here to do is get better."