07:13 AM ET 08.22 | In some corners, San Antonio's Gregg Popovich is considered the best coach in the NBA, but don't come to DeJuan Blair talking about Pop's greatness. The new Mavericks big man once was an up-and-comer with the Spurs before things went sideways, Tiago Splitter arrived and Blair's stock went down faster than a margarita on the Riverwalk. So what happened? "I don't know," Blair said. "Pop stopped [playing] me. I couldn't tell you what was going through that man's head at all. Nobody knows but him." What was perfectly clear, though, was that Blair needed a change of address. "I had to leave and come here where I think they'll give me confidence and believe in me," he said. "I didn't think they believed in me in San Antonio, so that's pretty good here. I feel supported. That's how it is."