Cincinnati had fewer penalties, fewer turnovers, and a lot fewer points.

The Cowboys (4-1) won their fourth game in a row Sunday with a convincing 28-14 win over their toughest opponent of the season. Dak Prescott was 18 for 24 with 227 yards and a touchdown and ran for another score. His streak is now 155 straight passes to start his career without an interception, an NFL record. Prescott has four straight games with a completion percentage above 70 and a quarterback rating above 100.

"It's a ton of fun and I think you can tell that on big plays or touchdowns," Prescott said. "It's the way the whole offense celebrates with each other or the way we all run to the end zone. We're just all happy for each other."

His rookie teammate Ezekiel Elliott had his third straight 100-yard game, and he did the most with the least, to this point of the season. His 15 carries are the fewest he's had in five games, but Elliott finished with 134 yards (8.9 yards per carry) and two touchdowns, the highlight being his 60-yard sprint to the end zone in the third quarter. The rookie leads the NFL in rushing with 546 yards.

"The O-line is the best line in football," said Elliott. "They make it easy for me."

The Cowboys opened the game with a 7-play, 64-yard drive, capped off by a 13-yard touchdown run by Elliott. They scored twice in the second quarter on a 5-yard run by Prescott and a 14-yard touchdown pass from Prescott to Cole Beasley.

Dallas led 21-0 at halftime.

The Bengals (2-3) opened the third quarter with a drive that resulted in a 50-yard missed field goal. The next play was Elliott's 60-yard run, and the Cowboys had a 28-0 lead.

The Bengals scored a couple of fourth quarter touchdowns to complete the scoring.

With the Cowboys winning and Prescott playing so well, the question of what to do when Tony Romo comes back from injury continues to be asked.

"I will tell you that this is a wonderful position to be in if you're in my shoes," said Cowboys owner Jerry Jones, who added that Romo will get an MRI on his back early this week. "He's going to be able to come back and really get in top shape and help us as we go into the season."

"The biggest thing we try to focus on is what each of us has to do to be our best each day," said head coach Jason Garrett. "(Dak) has come in and done what we've asked him to do. He executes ball plays, so he's focused on that. Tony's focused on coming back."

Through five games, Dallas is tied for the second-best record in the NFC at 4-1; Minnesota is 5-0. Next Sunday, the Cowboys will play the Packers in Green Bay.