"Daniel really led us," Coach K said. "He was 3-for-11 in the first half, and for him to have the courage to step forward like that, that's why he's our leader. He's been a heck of a player for us."
Ewing finished with 24 points, and Redick scored 22 for Duke (11-0), which starts the bulk of its Atlantic Coast Conference schedule next week against North Carolina State. Shelden Williams added 10.
Mardy Collins continued to flourish in his role as point guard, finishing with 23 points, seven rebounds, six assists and six steals for Temple (5-6).
"He wasn't a point guard when I got him, I've done a hell of a job with him," Chaney quipped. "He's a bona fide point guard now, he's as tough as they come."
Teammate Dustin Salisbery had a career-high 21 points.
Krzyzewski improved to 7-1 against Chaney, including five straight wins. The coaches were inducted into the Basketball Hall of Fame together in 2001, and they are two of only six active coaches with at least 700 victories.
Combined, they have 1,418, and despite the loss, Chaney appeared to have a good time afterward, spending several minutes posing for pictures with Duke fans.
"This was a very positive game for both teams," Krzyzewski said. "The other team wasn't going to lose a game like this, you had to win it."
Temple hung in throughout, getting within five points four times in the second half. The Blue Devils had an answer each time, mostly from Ewing.
After the Owls cut it to 60-55, Ewing got in the passing lane for a steal and drove the length of the court for an open dunk, then followed with a 3-pointer to increase the margin to 10.
"We just couldn't get a stop when we needed it," Collins said. "They matched everything we did."
Later, Ewing made another 3 after Wayne Marshall's putback cut the lead to 67-62, then matched a long-range jumper by Dustin Salisbery to put Duke ahead by seven.
Redick helped seal it from there at the free throw line, although he did miss one of his six attempts, leaving him 63-for-68 this season.
"It was all Daniel," Redick said. "His play in the second half got us going. He was just huge."
The Blue Devils shot a season-high 34 3-pointers, thanks to the Owls' trademark defense. Several times, Redick made shots from several steps behind the line, leaving Temple freshman Mark Tyndale shaking his head.
"We lost our focus as far as Redick," Chaney said. "He hit a couple of shots there when we have a freshman on him. He had done a great job, but he got mixed up and ran to where the ball was, rather than staying where Redick was."
Tyndale had his struggles on offense, too. After finishing 1-for-20 earlier this week against Massachusetts, he was 4-for-16 in this one, leaving him at 26 percent for the season.