Dirk Nowitzki thrust both arms in the air, a sea of blue screaming around him and the Dallas Mavericks finally ahead in these ultra-close NBA finals. Now it really is "now or never" for LeBron James and the Miami Heat. Nowitzki scored 29 points, driving for the go-ahead dunk with 2:45 remaining, and the Mavericks beat the Heat 112-103 on Thursday night to take a 3-2 lead in the NBA...




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