"We all know it's a different level here," he said. "But I think defense itself is about mindset and you have to be physically strong. So whatever happens, I will work on it. I will work on it. I know I will have to work on my body to be able to do some things in the NBA. A lot of these guys are stronger than overseas players. It's a challenge, so I will just go in the training room, go on the court, and fix it.