The AP reports: Winning streaks are nice and all, but Kevin Garnett prefers something more tangible—like a championship ring. “Unless you win it all, it’s pretty much steam in the air: You see it, and then it evaporates,” Garnett said after scoring 18 points to lead the Boston Celtics to a franchise-record 19th consecutive victory, 110-91 over the Philadelphia 76ers on Tuesday night. The Celtics will go for 20 in a row against the Los Angeles Lakers on Christmas Day in a rematch of last spring’s NBA finals, which Boston won in six games for its unprecedented 17th league title. The crowd couldn’t wait, chanting “Beat L.A!” with 5:27 left to play against the Sixers… Rajon Rondo also scored 18, Kendrick Perkins had eight points and 11 rebounds, and Ray Allen had 16 points as the Celtics starters watched from the bench while reserves Leon Powe and Eddie House helped expand the lead in the fourth quarter. Boston improved to 27-2—the best start for a two-loss team in NBA history.