Just another game, Dirk Nowitzki insisted. Motivation? Only to help the Dallas Mavericks end a four-game losing streak, not to settle any scores against his nemesis, the Utah Jazz. Regardless of the source -- or sources -- of inspiration, Nowitzki gave a brilliant performance Saturday night, making 16 of 20 shots and scoring 39 points to carry the Mavericks to a 115-108 victory over the Jazz.