WINSTON-SALEM, N.C. — Freshman Tyler Ennis scored 16 of his 18 points in the second half Wednesday night, and No. 2 Syracuse beat Wake Forest 67-57 to match the best start in program history.

C.J. Fair added 16 points for the Orange (20-0, 7-0 Atlantic Coast Conference), and Trevor Cooney scored all eight of his in the final 1:45.

Syracuse remained one of three unbeaten teams in Division I with No. 1 Arizona, which beat Stanford 60-57 on Wednesday, and No. 4 Wichita State.

The Orange pulled away late while sidestepping a possible trap with a visit from No. 17 Duke coming up this weekend, and joined the 2011-12 group as the only Orange teams to win their first 20 games.

Wake Forest (14-7, 4-4) had been perfect at home before Wednesday.

Travis McKie scored 12 points for the Demon Deacons, and his free throw with 4:10 left pulled them to 54-49. But Wake Forest came up empty on its next two trips down court, and Cooney caught fire.

Northwestern 65, No. 14 Wisconsin 56: In Madison, Wis., Drew Crawford scored a season-high 30 points, JerShon Cobb added all 10 of his points in the second half, and Northwestern upset the cold-shooting Badgers.

Crawford glided around the court for tough shots — none harder than a three off a curl with Wisconsin’s Josh Gasser’s hand in his face to give Northwestern (11-11, 4-5 Big Ten) a 13-point lead.

Wisconsin (17-4, 4-4) turned up the pressure late to get within six with 41 seconds left. But Traevon Jackson lost the ball on a drive with 23 seconds left to seal the Badgers’ fate.

Ben Brust’s 21 points led Wisconsin, which lost for the fourth time in five games after a 16-0 start to the season.

No. 6 Kansas 92, No. 16 Iowa St. 81: In Lawrence, Kan., freshman Andrew Wiggins scored a career-high 29 points, including six straight late in the game, to help the Jayhawks extend their winning streak to seven games.

Wiggins, the nation’s No. 1 recruit, has caught fire after a slow start to his college career. He had 27 points in Saturday’s win at TCU, and matched that with an emphatic dunk that gave Kansas an 81-72 lead with just under three minutes remaining in the game.

The Jayhawks (16-4, 7-0 Big 12) put away the Cyclones (15-4, 3-4) from there, something they failed to do after building a 16-point first-half lead and a 13-point second-half cushion.

No. 19 Saint Louis 77, Richmond 57: In St. Louis, guard Jordair Jett had 21 points and a career-best 10 rebounds, and the Billikens won their 13th straight.

Dwayne Evans added 15 points and 10 rebounds for Saint Louis (19-2, 6-0 Atlantic 10). The start is second-best in school history behind the 19-1 beginning in 1993-94.

Richmond (14-7, 4-2) shot 23 percent in the first half.

St. Bonaventure 78, No. 21 Massachusetts 65: In Olean, N.Y., Youssou Ndoye scored 11 of his 12 points in the second half, and St. Bonaventure clamped down on defense, upsetting the Minutemen.

Guard Matthew Wright, with 11 points, got the raucous crowd on its feet by putting the finishing touches on the win with a three-pointer with 55 seconds remaining. The Bonnies (13-8, 3-4 Atlantic 10) ended a 24-game losing streak against ranked opponents.

The near sellout crowd began yelling “Yes! Yes! Yes!” with 30 seconds left and then stormed the court.

Trey Davis scored 18 points for the Minutemen (17-3, 4-2).

No. 22 Memphis 69, UCF 59: In Orlando, Fla., Joe Jackson scored 17 points, and the Tigers held off UCF.

The victory extended the Tigers’ winning streak to four games. Memphis (16-4, 6-2 American) extended its conference road winning streak to 16 games.

UCF (9-9, 1-6) was within a basket for most of the second half but was outscored 13-5 to end the game.

Penn State 71, No. 24 Ohio State 70: In Columbus, Ohio, D.J. Newbill hit a pull-up jumper over Aaron Craft with two seconds left in overtime, lifting Penn State.

Newbill, who led the Nittany Lions (11-10, 2-6 Big Ten) with 25 points, hit a three that forced overtime. Brandon Taylor added 19 points as Penn State ended Ohio State’s winning streak in the series at 18.

LaQuinton Ross scored 16 points, and Lenzelle Smith Jr. had 15 for Ohio State (16-5, 3-5), which has lost five of six after a 15-0 start and a rise to No. 3 in the polls.

Arizona State 89, California 78, OT: Cal rallied from a 16-point deficit early in the second half to tie the game and send it into overtime, but ASU dominated the overtime period, outscoring the Bears 17-6.