GAINESVILLE, FLA. ? Florida coach Billy Donovan witnessed a nearly perfect opening half from his team Thursday night. It was enough to overwhelm another overmatched opponent.

Al Horford and Joakim Noah dominated again inside, combining for 34 points and 17 rebounds and leading the top-ranked Gators to a 90-61 victory against Jacksonville.

The defending national champions extended their winning streak to 14 games and won their 23rd consecutive game against a nonconference opponent.

This one was over by halftime as the Gators made 23 of their first 27 shots, shot 79 percent from the floor, compiled a 23-7 rebound advantage and recorded 18 assists on 23 baskets.

“We were making the extra pass a lot and getting open shots,” Horford said.

Florida (3-0) built a 31-point lead late in the first half, going ahead 45-14 on Taurean Green’s three-pointer, and cruised the rest of the way.

“We got a lot of layups, a lot of dunks,” Green said. “Guys were just knocking down shots.”

The Gators led 56-20 at the break, and the only downside was 10 turnovers – more than Florida had in either of its first two games.

The second half was considerably different. Florida’s reserves played much of the half, and Jacksonville (1-2) outscored the Gators 41-34 in the final 20 minutes.

Donovan hoped to use the lackadaisical effort as a learning tool.

“Jacksonville was a lot more competitive and a lot tougher than us in the second half,” Donovan said. “Our team was totally outplayed in the second half. We’ve got a very good basketball team when we play on edge. We came out full of ourselves, a little fat and not hungry. The result was 41 points and 57 percent shooting (for Jacksonville).

“That part was disappointing.”

Donovan conceded that his team experienced a natural letdown after such an impressive start.

“There’s a normal reaction to let up and have complacency,” he said.

But he also blamed himself and his players for the drop-off.

“I didn’t do a good enough job at halftime,” he said. “Whatever I said to them wasn’t very inspiring.”

It was the second game in three days for Florida and the second of four contests over eight days as the champs prepare for the Las Vegas Invitational next week. The Gators will play Western Kentucky and No. 3 Kansas University on consecutive nights in Vegas.

No. 11 Duke 75, UNC-Greensboro 48

Durham, N.C. – Brian Zoubek scored 17 points off the bench to lead No. 11 Duke over North Carolina-Greensboro. Gerald Henderson had 12 points, and David McClure and DeMarcus Nelson added 11 apiece for the Blue Devils (3-0), who never trailed. Duke shot 53 percent from the field while holding the Spartans to 32 percent shooting.

Kyle Hines scored 17 points, reaching double figures for the 24th straight game. Ricky Hickman added 12 points for UNC-Greensboro (0-3), which fell to 0-18 against ranked teams since moving to Division I in 1991-92.

Duke won its 43rd consecutive non-conference home game, while the Spartans lost their 14th straight road game dating to last season.

No. 13 Memphis 111, Jackson State 69

Memphis, Tenn. – Chris Douglas-Roberts scored 21 points to lead six Memphis players in double figures in the Tigers’ rout of Jackson State. Memphis (1-0) never trailed, led by as many as 23 in the first half and continued to build the advantage after the break.

Jeremy Hunt scored 16 for Memphis while Doneal Mack added 14, and Robert Dozier had 13 points before fouling out.

Trey Johnson, the preseason Southwestern Athletic Conference player of the year, scored 32 points to lead Jackson State (0-4). Julius Young added 11 and Grant Maxey had 10.

No. 23 Georgia Tech 103, Georgia State 74

Atlanta – Lewis Clinch scored 20 points to help No. 23 Georgia Tech beat Georgia State.

Freshmen Thaddeus Young added 19 points, and Javaris Crittenton had 18 as Georgia Tech overwhelmed Georgia State with its depth, pressure defense and outside shooting to easily win the first game between the Atlanta schools in 13 years.

Crittenton scored all of his 18 points in the first half, going 7-for-7 from the field.