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Over or Under 34.5? Making the Case Both Ways for the 2026-27 Mavericks

The betting line asks for an eight- or nine-win jump from a 26-win team. Here is what supports it, what threatens it, and the stretch of the schedule that will decide it early.

Quincy Nash

September 29, 20262 min read

A basketball arcing toward the rim - AI-generated illustration, Jake Team LLC

BetMGM opened the Dallas Mavericks' win total at 34.5. Last season they won 26. The whole preview comes down to whether nine more wins is easy or ambitious.

It is worth arguing both sides.

The case for the over

Kyrie Irving is back. He missed all of last season after his March 2025 ACL tear and has been cleared without restrictions. A 26-win team adding a player of his caliber is the single biggest reason to expect a jump.

Cooper Flagg is a year older. His rookie line of 21.0 points, 6.7 rebounds and 4.5 assists won him Rookie of the Year. Second-year leaps from players who start at that level tend to be real, and he turns 20 in December.

The roster finally fits the coach. Dusty May wants to run, and Dallas now has a stable of athletic forwards to do it, from Risacher and Aldama to Marshall, Washington and Flagg himself.

There is no reason to lose. Dallas' 2027 first-round pick belongs to Charlotte, which removes any draft incentive to sink.

The case for the under

The defense was a disaster. Dallas allowed 119.6 points a game and was outscored by 5.5 points a night. Nothing about the roster screams elite defense, and the one proven rim protector, Dereck Lively II, has not been cleared after his second foot surgery in 14 months.

It's a first-year NBA coach. May has never coached a day in the league. Rotations, back-to-backs and 82-game pacing are new to him.

Irving is 34. The front office still has to decide how he handles back-to-backs, and a guard coming off an ACL at that age carries risk every week.

The West does not wait. Oklahoma City swept Phoenix in the first round last spring, and the conference's middle tier is crowded with teams already built to win.

Where it gets decided

The opening two weeks are a fair test. Dallas starts Oct. 21 at Houston, visits Indiana, and plays its home opener Oct. 25 against San Antonio. Two road games and a home date with a San Antonio team that won 62 games last season will show quickly whether the defense has changed.

The verdict

The over is the better side, narrowly, and almost entirely because of Irving's health. If he plays 60 games, 35 or 36 wins is realistic. If he misses long stretches, this looks like a 30-win team with a very good second-year forward.

Either way, the more important number is not in the standings. It is how much better Flagg is in April than in October.

Sources

ESPN, Cooper Flagg beats Kon Knueppel for Rookie of the Year (Apr. 27, 2026)

NBA.com, Mavericks hire Dusty May as head coach (June 23, 2026)

NBA.com, Kyrie Irving on ACL recovery at Mavericks media day (Sept. 26, 2026)

ESPN, Dereck Lively II not cleared for camp (Sept. 23, 2026)

ESPN, Mavericks 2025-26 standings and 2026-27 schedule

BetMGM, Mavericks win total (Sept. 23, 2026)

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Quincy Nash

Quincy Nash covers Prosper high school and area college sports.

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