Mark Cuban has rarely criticized Dirk Nowitzki in public during their long owner/player relationship with the Dallas Mavericks.

Cuban told the media that he had a conversation with Nowitzki about his play.

“I think sometimes he loses concentration, and I think we’ve got to get past that,” Cuban said. “I mentioned it to him today. I asked him how his nap was during the game [Sunday at Oklahoma City]. He laughed. At least that’s while I was facing him. When I turned my back and walked away, I don’t know.”

Cuban said he’s called out Nowitzki before.

“Like ’08, ’09, when we lost to Oklahoma City when they sat everybody, I called out Dirk and the whole team,” Cuban said. “And I think the championship year, I called him out because I thought he let up when Caron [Butler] got hurt and then Dirk got hurt."