LOS ANGELES—Paul George scored 12 of his 29 points in the third quarter and the Los Angeles Clippers ended a two-game skid with a 97-91 victory over the Dallas Mavericks on Sunday. Reggie Jackson scored eight of his 23 points in the third, when the Clippers turned a one-point halftime deficit into a nine-point lead. Kristaps Porzingis had 25 points with eight rebounds as the Mavericks played their third consecutive game without star Luka Doncic because of a sprained left knee and ankle. Jalen Brunson scored 20 points for the Mavericks, who have lost all three games without Doncic to open a four-game road trip. The Mavericks led by as many as nine points in a rough-shooting first half in which both teams shot under 42% from the field. The Clippers rallied to pull within 47-46 at halftime. The Clippers shot 55.6% (10 of 18) in the third quarter, getting …