ORLANDO - For the second straight year, the Celtics will have to go through two Game 7s if they are to get to the Eastern Conference finals after the Orlando Magic came from behind and registered an 83-75 win in Game 6 Thursday night at Amway Arena. This time it was Celtics who couldn't put away the Magic as Boston led, 55-45, midway through the third. Hedo Turkoglu drained a three with 1:23 remaining to put the Magic up, 81-75. The Magic force a Game 7 Sunday night at TD Banknorth Garden despite shooting just 17-of-31 from the free throw line. Dwight Howard had 23 points and 22 rebounds for the Magic while the Celtics were paced by 19 points and 16 rebounds from Rajon Rondo.