Monta Ellis was under the weather two games ago and nursing a left ankle problem Tuesday night against Washington.

As usual, he was on the court. He never misses games. And he supplied the game-turning performance at, of all places, the defensive end of the court.

Ellis was solid with 20 points, but it was his play guarding the Wizards’ Bradley Beal that set up the Mavericks for a second-quarter getaway that they parlayed into a 114-87 blitzing over Washington at American Airlines Center.

Beal, who had poured in 33 points in Houston on Monday night in a 104-103 victory, was held to 1 of 7 shooting in the first half and never got on track offensively, as the Mavericks blew out the team that came in tied for the second-best record in the Eastern Conference.

“It was something that needed to be done,” Ellis said of his defense on Beal. “I was focused, and we knew he was the big key. We didn’t want him knocking down shots. And I had a lot of help from my teammates.”

Said Mavericks coach Rick Carlisle: “I thought the key to the game was Ellis’ defense on Beal. He’s one of the real keys to their team, and Monta took the challenge from the beginning. Monta stayed into him the whole time.”

Ellis, along with a strong effort from the bench, helped the Mavericks tie a nice bow on a joyous holiday season at home. Now it’s time to get out.

After sweeping a three-game homestand, the Mavericks can look forward to living out of their suitcases in January, when 12 of 16 games are on the road.

Before they finished off the 2014 portion of this season, the Mavericks at least re-established a foothold on their home floor. They had lost three of their previous six games at AAC before this set of games between Christmas and New Year’s.

Going 3-0 against the Lakers, Thunder and Wizards pushed the Mavericks to 23-10, the first time this season they have been 13 games above .500. They are 13-5 overall at home, 10-5 on the road.