NBA star Dirk Nowitzki, who plays in the same Dallas market as Tony Romo, has come out in defense of the Cowboys quarterback. Romo is being criticized after his three-interception performance in Sunday's loss to the Lions. "Dear tony romo. Don't worry abt all the critics," Nowitzki wrote on his Twitter account. "I heard that same garbage for a long time. Keep working hard and keep improving." Nowitzki silenced the critics by leading the Dallas Mavericks to the NBA championship last season.