Kristaps Porzingis had 28 points and 11 rebounds, Jayson Tatum added 25 points and the Boston Celtics defeated the Los Angeles Lakers for the first time in Christmas Day meetings 126-115 on Monday. Jaylen Brown had 19 points and Derrick White chipped in with 18 points and 11 rebounds. All five starters had at least 18 points for the Celtics, who have won three straight and 12 of their past 14.