Yasiel Puig kicked back in his chair, his well-worn uniform streaked in red clay, and calmly answered questions in Spanish. Then, suddenly, he threw his hands in the air and shouted, "Pow!" In any language, he's about as unpredictable off the field as he is on it, and everyone in baseball is riveted. Puig homered to complete a dazzling debut in New York, helping Los Angeles beat the Yankees 6-0 Wednesday for a split of their day-night doubleheader. The Dodgers salvaged manager Don Mattingly's return to the Bronx after a 6-4 loss in the opener.