WACO, Texas — LaceDarius Dunn scored 21 points, including four 3-pointers, Ekpe Udoh had his 11th double-double of the season and No. 20 Baylor backed up its big win on the road with an 84-63 victory over Iowa State on Wednesday night.

Udoh had 19 points, 10 rebounds and five blocked shots while Tweety Carter scored 14 points for the Bears (17-4, 4-3 Big 12), who were coming off an overtime victory Saturday at then-No. 6 Texas. They had lost to Kansas State before that in their last home game to end a school-record 11-game winning streak at the Ferrell Center.

Anthony Jones hit a 3-pointer to start a 7-0 run for Baylor and stretch its lead to 10 after Iowa State (13-9, 2-5) got a free throw in the opening seconds after halftime. There had been six ties and six lead changes in the first half, but none after that.

Craig Brackins had 19 points and Marquis Gilstrap added 15 for the Cyclones, who have lost four of the last five games.

Dunn made a 3-pointer on the first shot of the game, and his last came with 6:15 remaining with an extremely frustrated Iowa State coach Greg McDermott fuming on the sideline.

After Carter missed a 3, Brackins was ahead of everybody when he got a long pass and went up for a slam. He missed when A.J. Walton caught up and swatted at the ball. McDermott was livid that a foul wasn’t called, and play continued with Dunn hitting from long range to make it 65-49.

McDermott went under the basket to have words with the official during an ensuing timeout. When there was another timeout only seconds later, he conversed with another official though he avoided getting a technical foul.

Things really turned to fun for Baylor after that, with slam dunks from three different players on consecutive possessions.

Dunn had the first slam on an ally-oop pass from Udoh, who got the next slam before Quincy Acy, who finished with 10 points, threw one down. Walton was open at the basket the next time down, but settled for a layup instead.

The final margin was the largest of the game and Baylor had only eight turnovers.

Udoh should have had another assist, but instead was given a missed shot when his pass rolled off the rim — and was grabbed by Acy for a slam. That ended a wild sequence when Carter missed a 3-pointer and the ball bounced to the other end of the court. Dunn outran several Cyclones and saved it from going out of bounds to Walton.

Iowa State has lost 17 consecutive games against ranked teams, including five this season.

It is only the fourth time in school history the Bears have won at least 17 games in their first 21. The others were all NCAA tournament teams — 1946, 1948 and 2008.